Herbicidal substituted 4-sulphonylamino-2-azinyl-1,2,4-triazol-3-ones

ABSTRACT

Herbicidal substituted sulphonylaminotriazolinones of the formula ##STR1## in which R 1  represents an optionally substituted radical from the group consisting of alkyl, aralkyl, aryl and heteroaryl, 
     R 2  represents hydrogen or the group --SO 2  --R 1  where R 1  has the abovementioned meaning, 
     R 3  represents hydrogen, halogen, hydroxyl, mercapto, amino or an optionally substituted radical from the group consisting of alkyl, cycloalkyl, aralkyl, aryl, alkoxy, alkenyloxy, alkinyloxy, alkylthio, alkylsulphinyl, alkylsulphonyl, alkenylthio, alkinylthio, aralkoxy, aralkylthio, alkylamino and dialkylamino, 
     R 4  represents hydrogen, halogen, hydroxyl, amino or an optionally substituted radical from the group consisting of alkyl, alkoxy, alkylthio, alkylsulphinyl, alkylsulphonyl, alkylamino and dialkylamino, 
     X represents nitrogen or a CH group, 
     Y represents nitrogen or a CR 5  group where 
     R 5  represents hydrogen, halogen, cyano, alkyl, formyl, alkylcarbonyl or alkoxycarbonyl, and 
     Z represents nitrogen or a CR 6  group where 
     R 6  represents hydrogen, halogen, hydroxyl, amino or an optionally substituted radical from the group consisting of alkyl, alkoxy, alkylthio, alkylsulphinyl, alkylsulphonyl, alkylamino and dialkylamino, 
     and salts thereof. Intermediates of the formulas ##STR2## are also new.

The invention relates to new substituted 4-sulphonylamino-2-azinyl-1,2,4-triazol-3-ones (hereinafter abbreviated to "substituted sulphonylaminotriazolinones"), processes and new intermediates for their preparation, and their use as herbicides.

It has been disclosed that certain substituted triazolinones, such as, for example, 4-(3-trifluoromethoxybenzylideneamino)-2,4-dihydro-3H-1,2,4-triazol-3-one, are herbicidally active (cf. U.S. Pat. No. 3,884,910). However, the action of these known compounds is not satisfactory in all respects.

The new substituted sulphonylaminotriazolinones of the general formula (I) ##STR3## in which R¹ represents an optionally substituted radical from the series comprising alkyl, aralkyl, aryl and heteroaryl,

R² represents hydrogen or the group --SO₂ --R¹ where R¹ has the abovementioned meaning,

R³ represents hydrogen, halogen, hydroxyl, mercapto, amino or an optionally substituted radical from the series comprising alkyl, cycloalkyl, aralkyl, aryl, alkoxy, alkenyloxy, alkinyloxy, alkylthio, alkylsulphinyl, alkylsulphonyl, alkenylthio, alkinylthio, aralkoxy, aralkylthio, alkylamino and dialkylamino,

R⁴ represents hydrogen, halogen, hydroxyl, amino or an optionally substituted radical from the series comprising alkyl, alkoxy, alkylthio, alkylsulphinyl, alkylsulphonyl, alkylamino and dialkylamino,

X represents nitrogen or a CH group,

Y represents nitrogen or a CR⁵ group where

R⁵ represents hydrogen, halogen, cyano, alkyl, formyl, alkylcarbonyl or alkoxycarbonyl, and

Z represents nitrogen or a CR⁶ group where

R⁶ represents hydrogen, halogen, hydroxyl, amino or an optionally substituted radical from the series comprising alkyl, alkoxy, alkylthio, alkylsulphinyl, alkylsulphonyl, alkylamino and dialkylamino,

and salts of compounds of the formula (I) have now been found.

The new substituted sulphonylaminotriazolinones of the general formula (I) are obtained when

(a) substituted aminotriazolinones of the general formula (II) ##STR4## in which R³, R⁴, X, Y and Z have the abovementioned meanings, are reacted with sulphonyl halides or sulphonic anhydrides of the general formula (III)

    R.sup.1 --SO.sub.2 --Q                                     (III)

in which

R¹ has the abovementioned meaning and

Q represents fluorine, chlorine, bromine or the group --O--SO₂ --R¹, where

R¹ has the abovementioned meaning,

if appropriate, in the presence of an acid acceptor and, if appropriate, in the presence of a diluent, the resulting compounds of the formula (I) in which

R² represents the group --SO₂ --R¹,

are reacted, if appropriate, with desulphonylating agents, if appropriate in the presence of diluents, to give compounds of the formula (I) in which

R² represents hydrogen,

and, if appropriate, salts are prepared therefrom by customary methods or when

(b) sulphonylaminotriazolinones of the general formula (IV) ##STR5## in which R¹, R² and R³ have the above-mentioned meanings, are reacted with azines of the general formula (V) ##STR6## in which R⁴, X, Y and Z have the above-mentioned meanings and

Q¹ represents halogen, benzylsulphonyl or alkylsulphonyl, if appropriate, in the presence of an acid acceptor and, if appropriate, in the presence of a diluent and, if appropriate, salts are prepared by customary methods from the resultant compounds of the formula (I).

The new substituted sulphonylaminotriazolinones of the general formula (I) are distinguished by powerful herbicidal activity. These compounds represent a chemically novel class of herbicides. Surprisingly, the new compounds of the formula (I) show a considerably better herbicidal action than 4-(3-trifluoromethoxy-benzylideneamino)-2,4-dihydro-3H-1,2,4-triazol-3-one, which is known and has similar structure.

The invention preferably relates to compounds of the formula (I) in which

R¹ represents the radical ##STR7## where R⁷ and R⁸ are identical or different and represent hydrogen, fluorine, chlorine, bromine, iodine, cyano, nitro, C₁ -C₆ -alkyl [which is optionally substituted by fluorine, chlorine, bromine, cyano, carboxyl, C₁ -C₄ -alkoxycarbonyl, C₁ -C₄ -alkylaminocarbonyl, di-(C₁ -C₄ -alkyl)aminocarbonyl, hydroxyl, C₁ -C₄ -alkoxy, formyloxy, C₁ -C₄ -alkyl-carbonyloxy, C₁ -C₄ -alkoxycarbonyloxy, C₁ -C₄ -alkylamino-carbonyloxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl, C₁ -C₄ -alkylsulphonyl, di-(C₁ -C₄ -alkyl)aminosulphonyl, C₃ -C₆ -cycloalkyl or phenyl], represent C₂ -C₆ -alkenyl [which is optionally substituted by fluorine, chlorine, bromine, cyano, C₁ -C₄ -alkoxycarbonyl, carboxyl or phenyl], represent C₂ -C₆ -alkinyl [which is optionally substituted by fluorine, chlorine, bromine, cyano, C₁ -C₄ -alkoxy-carbonyl, carboxyl or phenyl], represent C₁ -C₄ -alkoxy [which is optionally substituted by fluorine, chlorine, bromine, cyano, carboxyl, C₁ -C₄ -alkoxy-carbonyl, C₁ -C₄ -alkoxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl or C₁ -C₄ -alkylsulphonyl], represent C₁ -C₄ -alkylthio [which is optionally substituted by fluorine, chlorine, bromine, cyano, carboxyl, C₁ -C₄ -alkoxy-carbonyl, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl or C₁ -C₄ -alkylsulphonyl], represent C₃ -C₆ -alkenyloxy [which is optionally substituted by fluorine, chlorine, bromine, cyano or C₁ -C₄ -cyano or C₁ -C₄ -alkoxy-carbonyl], represent C₂ -C₆ -alkenylthio [which is optionally substituted by fluorine, chlorine, bromine, cyano, nitro, C₁ -C₃ -alkylthio or C₁ -C₄ -alkoxycarbonyl], C.sub. 3 -C₆ -alkinyloxy, C₃ -C₆ -alkinylthio or represent the radical --S(O)_(p) --R⁹, where

p represents the numbers 1 or 2 and

R⁹ represents fluorine C₁ -C₄ -alkyl [which is optionally substituted by fluorine, chlorine, bromine, cyano or C₁ -C₄ -alkoxy-carbonyl], C₃ -C₆ -alkenyl, C₃ -C₆ -alkinyl, C₁ -C₄ -alkoxy, C₁ -C₄ -alkoxy-C₁ -C₄ -alkylamino, C₁ -C₄ -alkylamino, di-(C₁ -C₄ -alkyl)-amino or represents the radical --NHOR¹⁰, where

R¹⁰ represents C₁ -C₆ -alkyl [which is optionally substituted by fluorine, chlorine, cyano, C₁ -C₄ -alkoxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl, C₁ -C₄ -alkylsulphonyl, C₁ -C₄ -alkyl-carbonyl, C₁ -C₄ -alkoxycarbonyl, C₁ -C₄ -alkylaminocarbonyl or di-(C₁ -C₄ -alkyl)-amino-carbonyl], represents C₃ -C₆ -alkenyl [which is optionally substituted by fluorine, chlorine or bromine], C₃ -C₆ -alkinyl, C₃ -C₆ -cycloalkyl, C₃ -C₆ -cycloalkyl-C₁ -C₂ -alkyl, phenyl-C₁ -C₂ -alkyl [which is optionally substituted by fluorine, chlorine, nitro, cyano, C₁ -C₄ -alkyl, C₁ -C₄ -alkoxy or C₁ -C₄ -alkoxy-carbonyl], represents benzhydryl or represents phenyl [which is optionally substituted by fluorine, chlorine, nitro, cyano, C₁ -C₄ -alkyl, trifluoromethyl, C₁ -C₄ -alkoxy, C₁ -C₂ -fluoroalkoxy, C₁ -C₄ -alkylthio, trifluoromethylthio or C₁ -C₄ -alkoxycarbonyl],

R⁷ and/or R⁸ furthermore represent phenyl or phenoxy, C₁ -C₄ -alkylcarbonylamino, C₁ -C₄ -alkoxy-carbonylamino, C₁ -C₄ -alkylaminocarbonyl-amino, di-(C₁ -C₄ -alkyl)-aminocarbonylamino, or represent the radical --CO--R¹¹, where

R¹¹ represents C₁ -C₆ -alkyl, C₁ -C₆ -alkoxy, C₃ -C₆ -cycloalkoxy, C₃ -C₆ -alkenyloxy, C₁ -C₄ alkylthio, C₁ -C₄ -alkylamino, C₁ -C₄ -alkoxyamino, C₁ -C₄ -alkoxy-C₁ -C₄ -alkyl-amino or di-(C₁ -C₄ -alkyl)-amino [which are optionally substituted by fluorine and/or chlorine],

R⁷ and/or R⁸ furthermore represent C₁ -C₄ -alkylsulphonyloxy, di-(C₁ -C₄ -alkyl)-aminosulphonylamino or the radical --CH═N--R¹², where

R¹² represents C₁ -C₆ -alkyl which is optionally substituted by fluorine, chlorine, cyano, carboxyl, C₁ -C₄ -alkoxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl or C₁ -C₄ -alkylsulphonyl, represents benzyl which is optionally substituted by fluorine or chlorine, represents C₃ -C₆ -alkenyl or C₃ -C₆ -alkinyl, each of which is optionally substituted by fluorine or chlorine, represents phenyl which is optionally substituted by fluorine, chlorine, bromine, C₁ -C₄ -alkyl, C₁ -C₄ -alkoxy, trifluoromethyl, trifluoromethoxy or trifluoromethylthio, represents C₁ -C₆ -alkoxy, C₃ -C₆ -alkenoxy, C₃ -C₆ -alkinoxy or benzyloxy, each of which is optionally substituted by fluorine and/or chlorine, represents amino, C₁ -C₄ -alkylamino, di-(C₁ -C₄ -alkyl)-amino, phenylamino, C₁ -C₄ -alkyl-carbonylamino, C₁ -C₄ -alkoxy-carbonylamino, C₁ -C₄ -alkylsulphonylamino or represents phenylsulphonylamino which is optionally substituted by fluorine, chlorine, bromine or methyl,

where furthermore

R¹ represents the radical ##STR8## where R¹³ represents hydrogen or C₁ -C₄ -alkyl,

R¹⁴ and R¹⁵ are identical or different and represent hydrogen, fluorine, chlorine, bromine, nitro, cyano, C₁ -C₄ -alkyl [which is optionally substituted by fluorine and/or chlorine], C₁ -C₄ -alkoxy [which is optionally substituted by fluorine and/or chlorine], carboxyl, C₁ -C₄ -alkoxycarbonyl, C₁ -C₄ -alkylsulphonyl or di-(C₁ -C₄ -alkyl)-aminosulphonyl; where furthermore

R¹ represents the radical ##STR9## where R¹⁶ and R¹⁷ are identical or different and represent hydrogen, fluorine, chlorine, bromine, nitro, cyano, C₁ -C₄ -alkyl [which is optionally substituted by fluorine and/or chlorine] or C₁ -C₄ -alkoxy [which is optionally substituted by fluorine and/or chlorine]; where furthermore

R¹ represents the radical ##STR10## where R¹⁸ and R¹⁹ are identical or different and represent hydrogen, fluorine, chlorine, bromine, nitro, cyano, 11-C₄ -alkyl [which is optionally substituted by fluorine and/or chlorine], C₂ -C₄ -alkenyl [which is optionally substituted by fluorine and/or chlorine], C₁ -C₄ -alkoxy [which is optionally substituted by fluorine and/or chlorine], represents C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl or C₁ -C₄ -alkylsulphonyl [which are optionally substituted by fluorine and/or chlorine], and represents di-(C₁ -C₄ -alkyl)-aminosulphonyl, C₁ -C₄ -alkoxy-carbonyl, dimethylaminocarbonyl or dioxolanyl; where furthermore

R¹ represents the radical ##STR11## where R²⁰ and R²¹ are identical or different and represent hydrogen, fluorine, chlorine, bromine, C₁ -C₄ -alkyl [which is optionally substituted by fluorine and/or bromine], C₁ -C₄ -alkoxy [which is optionally substituted by fluorine and/or chlorine], represent C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl or C₁ -C₄ -alkylsulphonyl [which are optionally substituted by fluorine and/or chlorine], or represent di-(C₁ -C₄ -alkyl)-aminosulphonyl; where furthermore

R¹ represents the radical ##STR12## where

R²² and R²³ are identical or different and represent hydrogen, fluorine, chlorine, bromine, cyano, nitro, C₁ -C₄ -alkyl [which is optionally substituted by fluorine, chlorine, C₁ -C₄ -alkoxy and/or C₁ -C₄ -halogenoalkoxy], C₁ -C₄ -alkoxy [which is optionally substituted by fluorine and/or chlorine], C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl or C₁ -C₄ -alkylsulphonyl [which is optionally substituted by fluorine and/or chlorine], di-(C₁ -C₄ -alkyl)-aminosulphonyl or C₁ -C₄ -alkoxycarbonyl, and

A represents oxygen, sulphur or the group N--Z¹, where

Z¹ represents hydrogen, C₁ -C₄ -alkyl [which is optionally substituted by fluorine, chlorine, bromine or cyano], C₃ -C₆ -cycloalkyl, benzyl, phenyl [which is optionally substituted by fluorine, chlorine bromine or nitro], C₁ -C₄ -alkylcarbonyl, C₁ -C₄ -alkoxy-carbonyl or di-(C₁ -C₄ -alkyl)-aminocarbonyl; where furthermore

R¹ represents the radical ##STR13## where R²⁴ and R²⁵ are identical or different and represent hydrogen, C₁ -C₄ -alkyl, halogen, C₁ -C₄ -alkoxycarbonyl, C₁ -C₄ -alkoxy or C₁ -C₄ -halogenoalkoxy,

Y¹ represents sulphur or the group N--R²⁶, where R²⁶ represents hydrogen or C₁ -C₄ -alkyl; where furthermore

R¹ represents the radical ##STR14## where R²⁷ represents hydrogen, C₁ -C₄ -alkyl, benzyl, (iso)quinolinyl or phenyl,

R²⁸ represents hydrogen, halogen, cyano, nitro, C₁ -C₄ -alkyl [which is optionally substituted by fluorine and/or chlorine], C₁ -C₄ -alkoxy [which is optionally substituted by fluorine and/or chlorine], dioxolanyl or C₁ -C₄ -alkoxy-carbonyl and

R²⁹ represents hydrogen, halogen or C₁ -C₄ -alkyl; where furthermore

R¹ represents the radical ##STR15## where R³⁰ represents hydrogen, halogen, C₁ -C₄ -alkyl, C₁ -C₄ -halogenoalkyl, C₁ -C₄ -alkoxy, C₁ -C₄ -halogenoalkoxy or C₁ -C₄ -alkoxy-carbonyl; where furthermore

R¹ represents the radical ##STR16## where R³¹ represents C₁ -C₄ -alkyl and

R³² represents C₁ -C₄ -alkyl; where furthermore

R¹ represents the radical ##STR17## where R³³ represents hydrogen or methyl

in which furthermore

R² represents hydrogen or the group --SO₂ --R¹, where

R¹ has the meaning indicated above as preferred;

in which furthermore

R³ represents hydrogen, fluorine, chlorine, bromine, iodine, hydroxyl, mercapto, amino or an optionally fluorine- and/or chlorine-substituted radical from the series comprising C₁ -C₄ -alkyl, C₃ -C₆ -cycloalkyl, benzyl, phenyl, C₁ -C₄ -alkoxy, C₃ -C₄ -alkenyloxy, C₃ -C₄ -alkinyloxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl, C₁ -C₄ -alkylsulphonyl, C₃ -C₄ alkenylthio, C₃ -C₄ -alkinylthio, benzyloxy, benzylthio, C₁ -C₄ -alkylamino and di-(C₁ -C₄ -alkyl)-amino,

R⁴ represents hydrogen, fluorine, chlorine, bromine, hydroxyl, amino, C₁ -C₄ -alkyl, C₁ -C₄ -halogenoalkyl, C₁ -C₂ -alkoxy-C₁ -C₂ -alkyl, C₁ -C₄ -alkoxy, C₁ -C₄ -halogenoalkoxy, C₁ -C₂ -alkoxy-C₁ -C₂ -alkoxy, C₁ -C₄ -alkylthio, C₁ -C₄ -halogenoalkylthio, C₁ -C₄ -alkylsulphinyl, C₁ -C₄ -alkylsulphonyl, C₁ -C₄ -alkylamino or di-(C₁ -C₂ -alkyl)-amino,

X represents nitrogen or a CH group,

Y represents nitrogen or a CR⁵ group where

R⁵ represents hydrogen, fluorine, chlorine, bromine, cyano, methyl, formyl, acetyl, methoxycarbonyl or ethoxycarbonyl and

Z represents nitrogen or a CR⁶ group where

R⁶ represents hydrogen, fluorine, chlorine, bromine, C₁ -C₄ -alkyl, C₁ -C₄ -alkoxy, C₁ -C₄ -halogenoalkoxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl, C₁ -C₄ alkylsulphonyl, C₁ -C₄ -alkylamino, dimethylamino or diethylamino.

The invention particularly relates to compounds of the formula (I) in which

R¹ represents the radical ##STR18## where R⁷ represents fluorine, chlorine, bromine, methyl, trifluoromethyl, methoxy, difluoromethoxy trifluoromethoxy, C₁ -C₃ -alkylthio, C₁ -C₃ -alkylsulphinyl, C₁ -C₃ -alkylsulphonyl, dimethylaminosulphonyl, N-methoxy-N-methylaminosulphonyl, phenyl, phenoxy or C₁ -C₃ -alkoxycarbonyl and

R⁸ represents hydrogen, fluorine or chlorine; where furthermore

R¹ represents the radical ##STR19## where R¹³ represents hydrogen,

R¹⁴ represents fluorine, chlorine, bromine, methyl, methoxy, difluoromethoxy, trifluoromethoxy, ethoxy, methoxycarbonyl, ethoxycarbonyl, methylsulphonyl or dimethylaminosulphonyl and

R¹⁵ represents hydrogen; where furthermore

R¹ represents the radical ##STR20## where R represents C₁ -C₄ -alkyl, or

R¹ represents the radical ##STR21## where R represents C₁ -C₄ -alkyl, or

R¹ represents the radical ##STR22## where R³⁰ represents hydrogen, chlorine, methyl, ethyl, methoxycarbonyl or ethoxycarbonyl;

in which furthermore

R² represents hydrogen or for the group --SO₂ --R¹, where

R¹ has the meaning indicated above as being particularly preferred,

R³ represents hydrogen, methyl, ethyl, propyl, isopropyl, trifluoromethyl, cyclopropyl, benzyl, phenyl, t-butyl, s-butyl, i-butyl, n-butyl, methoxy or methylthio,

R⁴ represents hydrogen, fluorine, chlorine, bromine, methyl, trifluoromethyl, methoxy, ethoxy, difluoromethoxy, methylthio, ethylthio, amino, methylamino, ethylamino, dimethylamino or diethylamino,

X represents nitrogen or a CH group,

Y represents nitrogen or a CR⁵ group where

R⁵ represents hydrogen, fluorine, chlorine or methyl, and

Z represents nitrogen or a CR⁶ group where

R⁶ represents hydrogen, fluorine, chlorine, bromine, methyl, ethyl, methoxy, ethoxy, propoxy, isopropoxy, difluoromethoxy, methylthio, ethylthio, methylamino, ethylamino, dimethylamino or diethylamino.

The invention furthermore preferably relates to salts of compounds of the formula (I)

(α) with proton acids, such as, for example, hydrochloric acid, sulphuric acid, phosphoric acid, methanesulphonic acid, benzene- or p-toluenesulphonic acid, or naphthalene-mono- or -di-sulphonic acids, or

(β) with bases, such as, for example, sodium hydroxide, potassium hydroxide, calcium hydroxide, sodium hydride, potassium hydride, calcium hydride, sodium amide, potassium amide, calcium amide, sodium carbonate, potassium carbonate or calcium carbonate, sodium C₁ -C₄ -alkanoxides or potassium C₁ -C₄ -alkanoxides, ammonia, C₁ -C₄ -alkylamines, di-(C₁ -C₄ -alkyl)-amines or tri-(C₁ -C₄ -alkyl)-amines.

If, for example, 4-amino-5-methyl-2-(4,6-dimethoxy-s-triazin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one and 2-fluoro-benzenesulphonyl chloride (at least two mole equivalents) are used as starting substances in process (a) according to the invention, the course of the reaction in process (a) according to the invention can be outlined by the following equation: ##STR23##

If, for example, 4-(2-difluormethoxy-phenylsulphonylamino)-5-trifluormethyl-2,4-dihydro-3H-1,2,4-triazol-3-one and 4,6-dimethoxy-2-methylsulphonyl-pyrimidine are used as starting substances in process (b) according to the invention, the course of the reaction in process (b) according to the invention can be outlined by the following equation: ##STR24##

Formula II) provides a general definition of the substituted aminotriazolinones to be used as starting substances in the process (a) according to the invention for the preparation of compounds of the formula (I).

In formula (II), R³, R⁴, X, Y and Z preferably, or in particular, have those meanings which have already been mentioned above in connection with the description of the compounds of the formula (I) according to the invention as being preferred, or particularly preferred, for R³, R⁴, X, Y and Z.

Examples of the starting substances of the formula (II) are listed in Table 1 below.

                  TABLE 1                                                          ______________________________________                                         Examples of the starting substances of the                                     formula (II)                                                                   R.sup.3   R.sup.4    X       Y     Z                                           ______________________________________                                         H         CH.sub.3   N       CH    CCH.sub.3                                   H         CH.sub.3   N       CH    COCH.sub.3                                  H         CH.sub.3   N       CH    COC.sub.2 H.sub.5                           H         OCH.sub.3  N       CH    COCH.sub.3                                  H         OCH.sub.3  N       CH    CCl                                         H         H          N       CH    CCH.sub.3                                   H         CF.sub.3   N       CH    CCH.sub.3                                   H         CF.sub.3   N       CH    COCH.sub.3                                  H         CF.sub.3   N       CH    CCF.sub.3                                   H         OCH.sub.3  N       CH    COCHF.sub.2                                 H         CH.sub.3   N       CH    COCHF.sub.2                                 H         OCHF.sub.2 N       CH    COCHF.sub.2                                 H         CH.sub.3   N       N     COCH.sub.3                                  H         OCH.sub.3  N       N     COCH.sub.3                                  H         OCH.sub.3  N       N     CCl                                         H         C.sub.2 H.sub.5                                                                           N       CH    COCH.sub.3                                  H         C.sub.2 H.sub.5                                                                           N       N     COCH.sub.3                                  CH.sub.3  CH.sub.3   N       CH    CCH.sub.3                                   CH.sub.3  CH.sub.3   N       CH    COCH.sub.3                                  CH.sub.3  OCH.sub.3  N       CH    COCH.sub.3                                  CH.sub.3  OCH.sub.3  N       CH    CCl                                         CH.sub.3  OCHF.sub.2 N       CH    COCHF.sub.2                                 CH.sub.3  H          N       CH    CCH.sub.3                                   CH.sub.3  CF.sub.3   N       CH    CCH.sub.3                                   CH.sub.3  CF.sub.3   N       CH    COCH.sub.3                                  CH.sub.3  CF.sub.3   N       CH    CCF.sub.3                                   CH.sub.3  OCH.sub.3  N       CH    COCHF.sub.2                                 CH.sub.3  Cl         N       CH    COCHF.sub.2                                 CH.sub.3  CH.sub.3   N       CH    COCHF.sub.2                                 CH.sub.3  NHCH.sub.3 N       CH    COCH.sub.3                                  CH.sub.3  CH.sub.3   N       N     CCH.sub.3                                   CH.sub.3  CH.sub.3   N       N     COCH.sub.3                                  CH.sub.3  OCH.sub.3  N       N     COCH.sub.3                                  CH.sub.3  C.sub.2 H.sub.5                                                                           N       CH    COCH.sub.3                                  CH.sub.3  CH.sub.3   N       N     COC.sub.2 H.sub.5                           CH.sub.3  C.sub.2 H.sub.5                                                                           N       N     COCH.sub.3                                  CH.sub.3  CH.sub.3   N       N     CCl                                         CH.sub.3  CH.sub.3   CH      N     CCH.sub.3                                   CH.sub.3  OCH.sub.3  CH      N     COCH.sub.3                                  CH.sub.3  CH.sub.3   N       CH    CSCH.sub.3                                  H         CH.sub.3   N       CH    CN(CH.sub.3).sub.2                          H         OCH.sub.3  N       CH    CSCH.sub.3                                  H         OCH.sub.3  N       N     CNHC.sub.2 H.sub.5                          H         OC.sub.2 H.sub.5                                                                          N       N     CNHCH.sub.3                                 H         CH.sub.3   CH      CH    CCH.sub.3                                   OCH.sub.3 CH.sub.3   N       CH    CCH.sub.3                                   OCH.sub.3 CH.sub.3   N       CH    COCH.sub.3                                  OCH.sub.3 OCH.sub.3  N       CH    COCH.sub.3                                  OCH.sub.3 OCH.sub.3  N       CH    CCl                                         OCH.sub.3 H          N       CH    CCH.sub.3                                   OCH.sub.3 CF.sub.3   N       CH    COCH.sub.3                                  OCHF.sub.2                                                                               OCH.sub.3  N       CH    COCHF.sub.2                                 OCH.sub.3 CH.sub.3   N       CH    COCHF.sub.2                                 OCH.sub.3 CH.sub.3   N       N     CCH.sub.3                                   OCH.sub.3 CH.sub.3   N       N     COCH.sub.3                                  OCH.sub.3 OCH.sub.3  N       N     COCH.sub.3                                  OCH.sub.3 C.sub.2 H.sub.5                                                                           N       CH    COCH.sub.3                                  OCH.sub.3 C.sub.2 H.sub.5                                                                           N       N     COCH.sub.3                                  SCH.sub.3 CH.sub.3   N       CH    CCH.sub.3                                   OCH.sub.3 CH.sub.3   N       N     COC.sub.2 H.sub.5                           SCH.sub.3 CH.sub.3   N       CH    COCH.sub.3                                  SCH.sub.3 CH.sub.3   N       CH    COC.sub.2 H.sub.5                           SCH.sub.3 OCH.sub.3  N       CH    COCH.sub.3                                  SCH.sub.3 OCH.sub.3  N       CH    CCl                                         SCH.sub.3 H          N       CH    CCH.sub.3                                   SCH.sub.3 CF.sub.3   N       CH    CCF.sub.3                                   SCH.sub.3 CF.sub.3   N       CH    COCH.sub.3                                  SCH.sub.3 CF.sub.3   N       CH    CCH.sub.3                                   SCH.sub.3 OCH.sub.3  N       CH    COCHF.sub.2                                 SCH.sub.3 CH.sub.3   N       CH    COCHF.sub.2                                 SCH.sub.3 OCHF.sub.2 N       CH    COCHF.sub.2                                 SCH.sub.3 NHCH.sub.3 N       CH    COCH.sub.3                                  SCH.sub.3 CH.sub.3   N       N     CCH.sub.3                                   SCH.sub.3 CH.sub.3   N       N     COCH.sub.3                                  SCH.sub.3 OCH.sub.3  N       N     COCH.sub.3                                  SCH.sub.3 OCH.sub.3  N       N     CCl                                         SCH.sub.3 C.sub.2 H.sub.5                                                                           N       CH    COCH.sub.3                                  SCH.sub.3 C.sub.2 H.sub.5                                                                           N       N     COCH.sub.3                                  SCH.sub.3 OCH.sub.3  N       N     CNHC.sub.2 H.sub.5                          SCH.sub.3 OC.sub.2 H.sub.5                                                                          N       N     CNHCH.sub.3                                 C.sub.2 H.sub.5                                                                          CH.sub.3   N       CH    CCH.sub.3                                   C.sub.2 H.sub.5                                                                          CH.sub.3   N       CH    COCH.sub.3                                  C.sub.2 H.sub.5                                                                          CH.sub.3   N       CH    COC.sub.2 H.sub.5                           C.sub.2 H.sub.5                                                                          OCH.sub.3  N       CH    COCH.sub. 3                                 C.sub.2 H.sub.5                                                                          OCH.sub.3  N       CH    CCl                                         C.sub.2 H.sub.5                                                                          H          N       CH    CCH.sub.3                                   C.sub.2 H.sub.5                                                                          CF.sub.3   N       CH    CCH.sub.3                                   C.sub.2 H.sub.5                                                                          CF.sub.3   N       CH    COCH.sub.3                                  C.sub.2 H.sub.5                                                                          CF.sub.3   N       CH    CCF.sub.3                                   C.sub.2 H.sub.5                                                                          OCH.sub.3  N       CH    COCHF.sub.2                                 C.sub.2 H.sub.5                                                                          CH.sub.3   N       CH    COCHF.sub.2                                 C.sub.2 H.sub.5                                                                          OCHF.sub.2 N       CH    COCHF.sub.2                                 C.sub.2 H.sub.5                                                                          NHCH.sub.3 N       CH    COCH.sub.3                                  C.sub.2 H.sub.5                                                                          CH.sub.3   N       N     CCH.sub.3                                   C.sub.2 H.sub.5                                                                          CH.sub.3   N       N     COCH.sub.3                                  C.sub.2 H.sub.5                                                                          OCH.sub.3  N       N     COCH.sub.3                                  C.sub.2 H.sub.5                                                                          C.sub.2 H.sub.5                                                                           N       N     COCH.sub.3                                  C.sub.2 H.sub.5                                                                          CH.sub.3   N       N     CN(CH.sub.3).sub.2                          C.sub.2 H.sub.5                                                                          OCH.sub.3  N       N     CNHC.sub.2 H.sub.5                          C.sub.2 H.sub.5                                                                          OC.sub.2 H.sub.5                                                                          N       N     CNHCH.sub.3                                 C.sub.3 H.sub.7 -n                                                                       CH.sub.3   N       CH    CCH.sub.3                                   C.sub.3 H.sub.7 -n                                                                       CH.sub.3   N       CH    COCH.sub.3                                  C.sub.3 H.sub.7 -n                                                                       CH.sub.3   N       CH    COC.sub.2 H.sub.5                           C.sub.3 H.sub.7 -n                                                                       OCH.sub.3  N       CH    COCH.sub.3                                  C.sub.3 H.sub.7 -n                                                                       OCH.sub.3  N       CH    CCl                                         C.sub.3 H.sub.7 -n                                                                       H          N       CH    CCH.sub.3                                   C.sub.3 H.sub.7 -n                                                                       CF.sub.3   N       CH    CCH.sub.3                                   C.sub.3 H.sub.7 -n                                                                       CF.sub.3   N       CH    COCH.sub.3                                  C.sub.3 H.sub.7 -n                                                                       CF.sub.3   N       CH    CCF.sub.3                                   C.sub.3 H.sub.7 -n                                                                       OCH.sub.3  N       CH    COCHF.sub.2                                 C.sub.3 H.sub.7 -n                                                                       CH.sub.3   N       CH    COCHF.sub.2                                 C.sub.3 H.sub.7 -n                                                                       OCHF.sub.2 N       CH    COCHF.sub.2                                 C.sub.3 H.sub.7 -n                                                                       NHCH.sub.3 N       CH    COCH.sub.3                                  C.sub.3 H.sub.7 -n                                                                       CH.sub.3   N       N     CCH.sub.3                                   C.sub.3 H.sub.7 -n                                                                       CH.sub.3   N       N     COCH.sub.3                                  C.sub.3 H.sub.7 -n                                                                       OCH.sub.3  N       N     COCH.sub.3                                  C.sub.3 H.sub.7 -n                                                                       C.sub.2 H.sub.5                                                                           N       N     COCH.sub.3                                  C.sub.3 H.sub.7 -n                                                                       CH.sub.3   N       N     CN(CH.sub.3 ).sub.2                         C.sub.3 H.sub.7 -n                                                                       OCH.sub.3  N       N     CNHC.sub.2 H.sub.5                          C.sub.3 H.sub.7 -n                                                                       OC.sub.2 H.sub.5                                                                          N       N     CNHCH.sub.3                                 C.sub.3 H.sub.7 -i                                                                       CH.sub.3   N       CH    CCH.sub.3                                   C.sub.3 H.sub.7 -i                                                                       CH.sub.3   N       CH    COCH.sub.3                                  C.sub.3 H.sub.7 -i                                                                       CH.sub.3   N       CH    COC.sub.2 H.sub.5                           C.sub.3 H.sub.7 -i                                                                       OCH.sub.3  N       CH    COCH.sub.3                                  C.sub.3 H.sub.7 -i                                                                       OCH.sub.3  N       CH    CCl                                         C.sub.3 H.sub.7 -i                                                                       H          N       CH    CCH.sub.3                                   C.sub.3 H.sub.7 -i                                                                       CF.sub.3   N       CH    CCH.sub.3                                   C.sub.3 H.sub.7 -i                                                                       CF.sub.3   N       CH    COCH.sub.3                                  C.sub.3 H.sub.7 -i                                                                       CF.sub.3   N       CH    CCF.sub.3                                   C.sub.3 H.sub.7 -i                                                                       OCH.sub.3  N       CH    COCHF.sub.2                                 C.sub.3 H.sub.7 -i                                                                       CH.sub.3   N       CH    COCHF.sub.2                                 C.sub.3 H.sub.7 -i                                                                       OCHF.sub.2 N       CH    COCHF.sub.2                                 C.sub.3 H.sub.7 -i                                                                       NHCH.sub.3 N       CH    COCH.sub.3                                  C.sub.3 H.sub.7 -i                                                                       CH.sub.3   N       N     CCH.sub.3                                   C.sub.3 H.sub.7 -i                                                                       CH.sub.3   N       N     COCH.sub.3                                  C.sub.3 H.sub.7 -i                                                                       OCH.sub.3  N       N     COCH.sub.3                                  C.sub.3 H.sub.7 -i                                                                       C.sub.2 H.sub.5                                                                           N       N     COCH.sub.3                                  C.sub.3 H.sub.7 -i                                                                       CH.sub.3   N       N     CN(CH.sub.3).sub.2                          C.sub.3 H.sub.7 -i                                                                       OCH.sub.3  N       N     CNHC.sub.2 H.sub.5                          C.sub.3 H.sub.7 -i                                                                       OC.sub.2 H.sub.5                                                                          N       N     CNHCH.sub.3                                  ##STR25##                                                                               CH.sub.3   N       CH    CCH.sub.3                                    ##STR26##                                                                               CH.sub.3   N       CH    COCH.sub.3                                   ##STR27##                                                                               CH.sub.3   N       CH    COC.sub.2 H.sub.5                            ##STR28##                                                                               OCH.sub.3  N       CH    COCH.sub.3                                   ##STR29##                                                                               OCH.sub.3  N       CH    CCl                                          ##STR30##                                                                               H          N       CH    CCH.sub.3                                    ##STR31##                                                                               CF.sub.3   N       CH    CCH.sub.3                                    ##STR32##                                                                               CF.sub.3   N       CH    COCH.sub.3                                   ##STR33##                                                                               CF.sub.3   N       CH    CCF.sub.3                                    ##STR34##                                                                               OCH.sub.3  N       CH    COCHF.sub.2                                  ##STR35##                                                                               CH.sub.3   N       CH    COCHF.sub.2                                  ##STR36##                                                                               OCHF.sub.2 N       CH    COCHF.sub.2                                  ##STR37##                                                                               NHCH.sub.3 N       CH    COCH.sub.3                                   ##STR38##                                                                               CH.sub.3   N       N     CCH.sub.3                                    ##STR39##                                                                               CH.sub.3   N       N     COCH.sub.3                                   ##STR40##                                                                               OCH.sub.3  N       N     COCH.sub.3                                   ##STR41##                                                                               C.sub.2 H.sub.5                                                                           N       N     COCH.sub.3                                   ##STR42##                                                                               CH.sub.3   N       N     CN(CH.sub.3).sub.2                           ##STR43##                                                                               OCH.sub.3  N       N     CNHC.sub.2 H.sub.5                           ##STR44##                                                                               OC.sub.2 H.sub.5                                                                          N       N     CNHCH.sub.3                                 C.sub.4 H.sub.9 -n                                                                       CH.sub.3   N       CH    CCH.sub.3                                   C.sub.4 H.sub.9 -n                                                                       CH.sub.3   N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -n                                                                       CH.sub.3   N       CH    COC.sub.2 H.sub.5                           C.sub.4 H.sub.9 -n                                                                       OCH.sub.3  N       CH    COCH.sub.3                                  C.sub.4 H.sub. 9 -n                                                                      OCH.sub.3  N       CH    CCl                                         C.sub.4 H.sub.9 -n                                                                       H          N       CH    CCH.sub.3                                   C.sub.4 H.sub.9 -n                                                                       CF.sub.3   N       CH    CCH.sub.3                                   C.sub.4 H.sub.9 -n                                                                       CF.sub.3   N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -n                                                                       CF.sub.3   N       CH    CCF.sub.3                                   C.sub.4 H.sub.9 -n                                                                       OCH.sub.3  N       CH    COCHF.sub.2                                 C.sub.4 H.sub.9 -n                                                                       CH.sub.3   N       CH    COCHF.sub.2                                 C.sub.4 H.sub.9 -n                                                                       OCHF.sub.2 N       CH    COCHF.sub.2                                 C.sub.4 H.sub.9 -n                                                                       NHCH.sub.3 N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -n                                                                       CH.sub.3   N       N     CCH.sub.3                                   C.sub.4 H.sub.9 -n                                                                       CH.sub.3   N       N     COCH.sub.3                                  C.sub.4 H.sub.9 -n                                                                       OCH.sub.3  N       N     COCH.sub.3                                  C.sub.4 H.sub.9 -n                                                                       C.sub.2 H.sub.5                                                                           N       N     COCH.sub.3                                  C.sub.4 H.sub.9 -n                                                                       CH.sub.3   N       N     CN(CH.sub.3).sub.2                          C.sub.4 H.sub.9 -n                                                                       OCH.sub.3  N       N     CNHC.sub.2 H.sub.5                          C.sub.4 H.sub.9 -n                                                                       OC.sub.2 H.sub.5                                                                          N       N     CNHCH.sub.3                                 C.sub.4 H.sub.9 -s                                                                       CH.sub.3   N       CH    CCH.sub.3                                   C.sub.4 H.sub.9 -s                                                                       CH.sub.3   N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -s                                                                       CH.sub.3   N       CH    COC.sub.2 H.sub.5                           C.sub.4 H.sub.9 -s                                                                       OCH.sub.3  N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -s                                                                       OCH.sub.3  N       CH    CCl                                         C.sub.4 H.sub.9 -s                                                                       H          N       CH    CCH.sub.3                                   C.sub.4 H.sub.9 -s                                                                       CF.sub.3   N       CH    CCH.sub.3                                   C.sub.4 H.sub.9 -s                                                                       CF.sub.3   N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -s                                                                       CF.sub.3   N       CH    CCF.sub.3                                   C.sub.4 H.sub.9 -s                                                                       OCH.sub.3  N       CH    COCHF.sub.2                                 C.sub.4 H.sub.9 -s                                                                       CH.sub.3   N       CH    COCHF.sub.2                                 C.sub.4 H.sub.9 -s                                                                       OCHF.sub.2 N       CH    COCHF.sub.2                                 C.sub.4 H.sub.9 -s                                                                       NHCH.sub.3 N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -s                                                                       CH.sub.3   N       N     CCH.sub.3                                   C.sub.4 H.sub.9 -s                                                                       CH.sub.3   N       N     COCH.sub.3                                  C.sub.4 H.sub.9 -s                                                                       OCH.sub.3  N       N     COCH.sub.3                                  C.sub.4 H.sub.9 -s                                                                       C.sub.2 H.sub.5                                                                           N       N     COCH.sub. 3                                 C.sub.4 H.sub.9 -s                                                                       CH.sub.3   N       N     CN(CH.sub.3).sub.2                          C.sub.4 H.sub.9 -s                                                                       OCH.sub.3  N       N     CNHC.sub.2 H.sub.5                          C.sub.4 H.sub.9 -s                                                                       OC.sub.2 H.sub.5                                                                          N       N     CNHCH.sub.3                                 C.sub.4 H.sub.9 -i                                                                       CH.sub.3   N       CH    CCH.sub.3                                   C.sub.4 H.sub.9 -i                                                                       CH.sub.3   N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -i                                                                       CH.sub.3   N       CH    COC.sub.2 H.sub.5                           C.sub.4 H.sub.9 -i                                                                       OCH.sub.3  N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -i                                                                       OCH.sub.3  N       CH    CCl                                         C.sub.4 H.sub.9 -i                                                                       H          N       CH    CCH.sub.3                                   C.sub.4 H.sub.9 -i                                                                       CF.sub.3   N       CH    CCH.sub.3                                   C.sub.4 H.sub.9 -i                                                                       CF.sub.3   N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -i                                                                       CF.sub.3   N       CH    CCF.sub.3                                   C.sub.4 H.sub.9 -i                                                                       OCH.sub.3  N       CH    COCHF.sub.2                                 C.sub.4 H.sub.9 -i                                                                       CH.sub.3   N       CH    COCHF.sub.2                                 C.sub.4 H.sub.9 -i                                                                       OCHF.sub.2 N       CH    COCHF.sub.2                                 C.sub.4 H.sub.9 -i                                                                       NHCH.sub.3 N       CH    COCH.sub.3                                  C.sub. 4 H.sub.9 -i                                                                      CH.sub.3   N       N     CCH.sub.3                                   C.sub.4 H.sub.9 -i                                                                       CH.sub.3   N       N     COCH.sub.3                                  C.sub.4 H.sub.9 -i                                                                       OCH.sub.3  N       N     COCH.sub.3                                  C.sub.4 H.sub.9 -i                                                                       C.sub.2 H.sub.5                                                                           N       N     COCH.sub.3                                  C.sub.4 H.sub.9 -i                                                                       CH.sub.3   N       N     CN(CH.sub.3).sub.2                          C.sub.4 H.sub.9 -i                                                                       OCH.sub.3  N       N     CNHC.sub.2 H.sub.5                          C.sub.4 H.sub.9 -i                                                                       OC.sub.2 H.sub.5                                                                          N       N     CNHCH.sub.3                                 C.sub.4 H.sub.9 -t                                                                       CH.sub.3   N       CH    CCH.sub.3                                   C.sub.4 H.sub.9 -t                                                                       CH.sub.3   N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -t                                                                       CH.sub.3   N       CH    COC.sub.2 H.sub.5                           C.sub.4 H.sub.9 -t                                                                       OCH.sub.3  N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -t                                                                       OCH.sub.3  N       CH    CCl                                         C.sub.4 H.sub.9 -t                                                                       H          N       CH    CCH.sub.3                                   C.sub.4 H.sub.9 -t                                                                       CF.sub.3   N       CH    CCH.sub.3                                   C.sub.4 H.sub.9 -t                                                                       CF.sub.3   N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -t                                                                       CF.sub.3   N       CH    CCF.sub.3                                   C.sub. 4 H.sub.9 -t                                                                      OCH.sub.3  N       CH    COCHF.sub.2                                 C.sub.4 H.sub.9 -t                                                                       CH.sub.3   N       CH    COCHF.sub.2                                 C.sub.4 H.sub.9 -t                                                                       OCHF.sub.2 N       CH    COCHF.sub.2                                 C.sub.4 H.sub.9 -t                                                                       NHCH.sub.3 N       CH    COCH.sub.3                                  C.sub.4 H.sub.9 -t                                                                       CH.sub.3   N       N     CCH.sub.3                                   C.sub.4 H.sub.9 -t                                                                       CH.sub.3   N       N     COCH.sub.3                                  C.sub.4 H.sub.9 -t                                                                       OCH.sub.3  N       N     COCH.sub.3                                  C.sub.4 H.sub.9 -t                                                                       C.sub.2 H.sub.5                                                                           N       N     COCH.sub.3                                  C.sub.4 H.sub.9 -t                                                                       CH.sub.3   N       N     CN(CH.sub.3).sub.2                          C.sub.4 H.sub.9 -t                                                                       OCH.sub.3  N       N     CNHC.sub.2 H.sub.5                          C.sub.4 H.sub.9 -t                                                                       OC.sub.2 H.sub.5                                                                          N       N     CNHCH.sub.3                                 CF.sub.3  CH.sub.3   N       CH    CCH.sub.3                                   CF.sub.3  CH.sub.3   N       CH    COCH.sub.3                                  CF.sub.3  CH.sub.3   N       CH    COC.sub.2 H.sub.5                           CF.sub.3  OCH.sub.3  N       CH    COCH.sub.3                                  CF.sub.3  OCH.sub.3  N       CH    CCl                                         CF.sub.3  H          N       CH    CCH.sub.3                                   CF.sub.3  CF.sub.3   N       CH    C CH.sub.3                                  CF.sub.3  CF.sub.3   N       CH    COCH.sub.3                                  CF.sub.3  CF.sub.3   N       CH    CCF.sub.3                                   CF.sub.3  OCH.sub.3  N       CH    COCHF.sub.2                                 CF.sub.3  CH.sub.3   N       CH    COCHF.sub.2                                 CF.sub.3  OCHF.sub.2 N       CH    COCHF.sub.2                                 CF.sub.3  NHCH.sub.3 N       CH    COCH.sub.3                                  CF.sub.3  CH.sub.3   N       N     CCH.sub.3                                   CF.sub.3  CH.sub.3   N       N     COCH.sub.3                                  CF.sub.3  OCH.sub.3  N       N     COCH.sub.3                                  CF.sub.3  C.sub.2 H.sub.5                                                                           N       N     COCH.sub.3                                  CF.sub.3  CH.sub.3   N       N     COCH.sub.3                                  CF.sub.3  OCH.sub.3  N       N     CNHC.sub.2 H.sub.5                          CF.sub.3  OC.sub.2 H.sub.5                                                                          N       N     CNHCH.sub.3                                 C.sub.6 H.sub.5                                                                          CH.sub.3   N       CH    CCH.sub.3                                   C.sub.6 H.sub.5                                                                          CH.sub.3   N       CH    COCH.sub.3                                  C.sub.6 H.sub.5                                                                          OCH.sub.3  N       CH    COCH.sub.3                                  C.sub.6 H.sub.5                                                                          OCH.sub.3  N       CH    CCl                                         C.sub.6 H.sub.5                                                                          CH.sub.3   N       N     COCH.sub.3                                  C.sub.6 H.sub.5                                                                          OCH.sub.3  N       N     COCH.sub.3                                  CH.sub.2 C.sub.6 H.sub.5                                                                 CH.sub.3   N       CH    CCH.sub.3                                   CH.sub.2 C.sub.6 H.sub.5                                                                 CH.sub.3   N       CH    COCH.sub.3                                  CH.sub.2 C.sub.6 H.sub.5                                                                 OCH.sub.3  N       CH    COCH.sub.3                                  CH.sub.2 C.sub.6 H.sub.5                                                                 OCH.sub.3  N       CH    CCl                                         CH.sub.2 C.sub.6 H.sub.5                                                                 CH.sub.3   N       N     COCH.sub.3                                  CH.sub.2 C.sub.6 H.sub.5                                                                 OCH.sub.3  N       N     COCH.sub.3                                  ______________________________________                                    

The substituted aminotriazolinones of the formula (II), which are to be used as starting substances in process (a), were hitherto unknown from the literature. The new compounds of the formula (II) are obtained when

(α) aminotriazolinones of the general formula (VI) ##STR45## in which R³ has the abovementioned meaning,

are reacted at temperatures between 20° C. and 150° C., if appropriate, with carbonyl compounds of the general formula (VII) ##STR46## in which A¹ represents hydrogen or alkyl and

A² represents alkyl or aryl,

if appropriate in the presence of a catalyst, such as, for example, sulphuric acid, methanesulphonic acid or p-toluenesulphonic acid, and if appropriate in the presence of a diluent, such as, for example, methylene chloride, toluene, xylene, methanol, ethanol or isopropanol, the alkylideneaminotriazolinones (some of which are new) formed in this process of the general formula (VIII) ##STR47## in which A¹, A² and R³ have the abovementioned meanings are, if appropriate, isolated and/or reacted virtually in situ, that is to say after concentrating the reaction mixture, with azines of the general formula (V) ##STR48## in which R⁴, X, Y and Z have the abovementioned meanings and

Q¹ represents halogen, benzylsulphonyl or alkylsulphonyl,

if appropriate in the presence of an acid acceptor, such as, for example, potassium carbonate, and if appropriate in the presence of a diluent, such as, for example, acetonitrile or dimethylformamide, at temperatures between 0° C. and 150° C. and the (new) substituted alkylideneaminotriazolinones formed in this process, of the general formula (IX) ##STR49## in which A¹, A², A³, R⁴, X, Y and Z have the abovementioned meanings,

are hydrolyzed in a customary manner, for example by reacting them with water, if appropriate in the presence of an organic solvent, such as, for example, methanol, ethanol, isopropanol or dioxane, and if appropriate in the presence of an acid, such as, for example, hydrochloric acid or sulphuric acid, at temperatures between 20° C. and 100° C. to give the compounds of the formula (II); or when

(β) oxa-diazolones of the general formula (X) ##STR50## in which R³ has the abovementioned meaning,

are reacted with azines of the general formula (V) --above--if appropriate in the presence of an acid acceptor, such as, for example, potassium carbonate, and if appropriate in the presence of a diluent, such as, for example, acetonitrile, dioxane or dimethylformamide, at temperatures between 0° C. and 150° C. and the (new) substituted oxadiazolones formed in this process, of the general formula (XI) ##STR51## in which R³, R⁴, X, Y and Z have the abovementioned meanings,

are reacted with hydrazine or hydrazine hydrate at temperatures between 0° C. and 150° C.

Some of the compounds of the formula (II) can be prepared using a synthesis route similar to the one described under (α) but without introducing protective groups using carbonyl compounds of the formula (VII), that is to say by directly reacting compounds of the formula (VI) with compounds of the formula (V) under the reaction conditions indicated under (α).

Formula (VI) provides a general definition of the aminotriazolinones, which are required as intermediates In formula (VI), R³ preferably, or in particular, has the meaning which has already been indicated above in connection with the description of the compounds of the formula (I) according to the invention as being preferred, or particularly preferred, for R³.

Example of the compounds of the formula (VI) which may be mentioned are:

4-amino-2,4-dihydro-3-H-1,2,4-triazol-3-one, 4-amino-5-methyl-2,4-dihydro-3H-1,2,4-triazol-3-one, 4-amino-5-methoxy-2,4-dihydro-3H-1,2,4-triazol-3-one, 4-amino-5-methylthio-2,4-dihydro-3H-1,2,4-triazol-3-one, 4-amino-5-ethyl-2,4-dihydro-3H-1,2,4-triazol-3-one, 4-amino-5-propyl-2,4-dihydro-3H-1,2,4-triazol-3-one, 4-amino-5-cyclopropyl-2,4-dihydro-3H-1,2,4-triazol-3-one, 4-amino-5-isopropyl-2,4-dihydro-3H-1,2,4-triazol-3-one, 4-amino-5-butyl-2,4-dihydro-3H-1,2,4-triazol-3-one, 4-amino-5-isobutyl-2,4-dihydro-3H-1,2,4-triazol-3-one and 4-amino-5-tert -butyl-2,4-dihydro-3H-1,2,4-triazol-3-one.

The aminotriazolinones of the formula (VI) are known and/or can be prepared by processes known per se (cf. Chem. Ber. 98 (1965), 3025-3033; J.Heterocycl. Chem. 21 (1984), 1769-1774; Doga: Kim. Ser. 10 (1986), 34-39 -quoted in Chem. Abstracts 106: (1987), 138338e).

Formula (VII) provides a definition of the carbonyl compounds also required as intermediates.

In formula (VII),

A¹ preferably represents hydrogen or methyl and

A² preferably represents methyl, ethyl, propyl, isopropyl, butyl, isobutyl or phenyl.

Examples of the compounds of the formula (VII) which may be mentioned are:

acetone, methyl ethyl ketone, methyl propyl ketone, methyl isopropyl ketone, methyl butyl ketone, methyl isobutyl ketone and benzaldehyde.

The intermediates of the formula (VII) are known chemicals for organic synthesis.

Formula (V) provides a general definition of the azines also required as intermediates. In formula (V), R⁴, X, Y and Z preferably, or in particular, have those meanings which have already been mentioned above in connection with the description of the compounds of the formula (I) according to the invention as being preferred, or particularly preferred, for R⁴, X, Y and Z, and Q¹ preferably represents fluorine, chlorine, bromine, benzylsulphonyl or C₁ -C₄ -alkylsulphonyl, in particular represents chlorine or methylsulphonyl.

Examples of the compounds of the formula (V) which may be mentioned are:

2-chloro-, 2-benzylsulphonyl- and 2-methylsulphonyl-4,6-dimethyl-pyrimidine, -4-methyl-6-methoxy-pyrimidine, -4,6-dimethoxy-pyrimidine, -4-methyl-6-ethoxy-pyrimidine, -4-chloro-6-methoxy-pyrimidine, -4-methyl-pyrimidine, -4-chloro-6-methyl-pyrimidine, -4-trifluoromethyl-6-methoxypyrimidine, -4-methoxy-6-difluoromethoxy-pyrimidine, -4-methyl-6-difluoromethoxy-pyrimidine, -4,6-bis-difluoromethoxy-pyrimidine, -4-chloro-6-ethoxy-pyrimidine, -4-chloro-6-difluoromethoxy-pyrimidine, -4-methoxy-5-methylpyrimidine, -4-trifluoromethyl-6-difluoromethoxy-pyrimidine, -4,6-diethoxy-pyrimidine, -4,5-dichloro-6-methyl-pyrimidine, -4-methyl-5-chloro-6-methoxy-pyrimidine, -4,6-dichloropyrimidine, -4-ethyl-6-methoxy-pyrimidine, -5-chloro-4,6-dimethoxy-pyrimidine, -4-methoxy-6-methylamino-pyrimidine and -4,6-bis-trifluoromethyl-pyrimidine, furthermore 2-chloro-4,6-dimethyl-s-triazine, 2-chloro-4-methyl-6-methoxy-s-triazine, 2-chloro-4,6-dimethoxy-s-triazine, 2,4-dichloro-6-methoxy-s-triazine, 2-chloro-4-ethyl-6-methoxy-s-triazine, 2-chloro-4-methyl-6-ethoxy-s-triazine, 2-chloro-4-ethoxy-6-methylamino-s-triazine, 2-chloro-4-methoxy-6-methylamino-s-triazine, 2-chloro-4-methoxy-6-ethylamino-s-triazine and 2-chloro-4-ethoxy-6-ethylamino-s-triazine.

The azines of the formula (V) are known and/or can be prepared by processes known per se (cf., J. Chem. Soc. 1957, 1830, 1833; J. Org. Chem. 26 (1961), 792; U.S. Pat. Nos. 3,308,119 and 4,711,959).

Formula (X) provides a general definition of the oxadiazolones also to be used as intermediates. In formula (X), R³ preferably, or in particular, has the meaning which has already been mentioned above in connection with the description of the compounds of the formula (I) according to the invention as being preferred, or particularly preferred, for R³.

Examples of the compounds of the formula (X) which may be mentioned are:

1,3,4-oxadiazol-2(3H)-one, 5-methyl-1,3,4-oxadiazol-2(3H)-one, 5-ethyl-1,3,4-oxadiazol-2(3H)-one, 5-propyl-1,3,4-oxadiazol-2(3H)-one, 5-isopropyl-1,3,4-oxadiazol-2(3H)-one, 5-butyl-1,3,4-oxadiazol-2(3H)-one, 5-trifluoromethyl-1,3,4-oxadiazol-2(3H)-one, 5-tert.-butyl-1,3,4-oxadiazol-2(3H)-one, 5-cyclopropyl-1,3,4-oxadiazol-2(3H)-one, 5-methoxy-1,3,4-oxadiazol-2(3H)-one and 5-methylthio-1,3,4-oxadiazol-2(3H)-one.

The oxadiazolones of the formula (X) are known and/or can be prepared by processes known per se (cf. Helv. Chim. Acta 55 (1972), 1174-1178).

Formula (III) provides a general definition of the sulphonyl halides or sulphonic anhydrides also to be used as starting substances in process (a) according to the invention for the preparation of the new compounds of the formula (I). In formula (III), R¹ preferably, or in particular, has the meaning which has been indicated above in connection with the description of the compounds of the formula (I) according to the invention as being preferred, or particularly preferred, and Q preferably represents chlorine

Starting substances of the formula (III) which may be mentioned by way of example are:

benzenesulphonyl chloride, 2-chloro-, 3-chloro-, 4-chloro-, 2,5-dichloro-, 2-fluoro-, 4-fluoro-, 2-bromo-, 4-bromo-, 2-cyano-, 2-nitro-, 4-nitro-, 2-methyl-, 4-methyl-, 2-chloromethyl-, 2-trifluoromethyl-, 2-methoxy-, 4-methoxy-, 2-(2-methoxy-ethoxy)-, 2-methylsulphonyl-, 2-isopropoxy-carbonyl-, 2-chloro-6-methyl-, 2-bromo-6-methyl-, 2-methylthio-, 2-trifluoromethylthio-, 2-difluoromethylthio-, 2-cyclopropyloxycarbonyl-, 2-phenoxy-, 2-difluoromethoxy-, 2-trifluoromethoxy-, 2-(2-chloroethoxy)-, 2-methylthio-methyl-, 2-dimethylaminosulphonyl-, 2-phenyl-, 2-methoxycarbonyl-, 2-ethoxycarbonyl-, 2-dimethylaminocarbonyl- and 2-diethylaminocarbonyl-benzenesulphonyl chloride and (2-chloro-phenyl)-, (2-cyano-phenyl)-, (2-methoxycarbonylphenyl)-, (2-trifluoromethoxy-phenyl)- and (2-difluoromethoxy-phenyl)-methanesulphonyl chloride, furthermore 1-methyl-4-methoxycarbonyl-pyrazole-5-sulphonyl chloride, 1-methyl-4-ethoxycarbonyl-pyrazole-5-sulphonyl chloride, 1-methyl-4-bromo-pyrazole-5-sulphonyl chloride, 2-methoxycarbonyl-thiophene-3-sulphonyl chloride, 3-trifluoromethyl-pyridine- 2-sulphonyl chloride, 3-dimethylaminocarbonyl-pyridine-2-sulphonyl chloride, 3-dimethylaminocarbonyl-6-methyl-pyridine-2-sulphonyl chloride, 3-dimethylaminocarbonyl-6-chloro-pyridine-2-sulphonyl chloride and 1-(iso)quinolinyl-4-ethoxycarbonyl-pyrazole-5-sulphonyl chloride.

The sulphonyl halides or sulphonic anhydrides of the formula (III) are known and/or can be prepared by processes known per se (cf. J. Org. Chem. 33 (1968), 2104; J. Org. Chem. 25 (1960), 1824; DE-AS (German Published Specification) 2,308,262; EP-OS (European Published Specification) 23,140, 23,141, 23,422, 35,893, 48,143, 51,466, 64,322, 70,041, 44,808 and 44,809; U.S. Pat. Nos. 2,929,820, 4,282,242; 4,348,220 and 4,372,778 and Angew. Chem 93 (1981), 151).

Process (a) according to the invention for the preparation of the new compounds of the formula (I) is preferably carried out using diluents Suitable diluents for this process are virtually all inert organic solvents. These preferably include aliphatic and aromatic, optionally halogenated hydrocarbons, such as pentane, hexane, heptane, cyclohexane, petroleum ether, benzine, ligroin, benzene, toluene, xylene, methylene chloride, ethylene chloride, chloroform, carbon tetrachloride, chlorobenzene and o-dichlorobenzene, ethers, such as diethyl ether, dibutyl ether, glycol dimethyl ether, diglycol dimethyl ether, tetrahydrofuran and dioxane, ketones, such as acetone, methyl ethyl ketone, methyl isopropyl ketone and methyl isobutyl ketone, esters, such as methyl acetate and ethyl acetate, nitriles, such as, for example, acetonitrile and propionitrile, amides, such as, for example, dimethylformamide, dimethylacetamide and N-methyl-pyrrolidone, and dimethyl sulphoxide, tetramethylene sulphone and hexamethylphosphoric triamide and pyridine.

Acid acceptors which can be employed in process (a) according to the invention are all acid-binding agents which can customarily be used for reactions of this type. Alkali metal hydroxides, such as, for example, sodium hydroxide and potassium hydroxide, alkaline earth metal hydroxides, such as, for example, calcium hydroxide, alkali metal carbonates and alkali metal alkoxides, such as sodium carbonate and potassium carbonate, sodium tert.butoxide and potassium tert.-butoxide, furthermore aliphatic, aromatic or heterocyclic amines, for example triethylamine, trimethylamine, dimethylaniline, dimethylbenzylamine, pyridine, picoline, 1,5-diazabicyclo-[4,3,0]-non-5-ene (DBN), 1,8-diazabicyclo-[5,4,0]-undec-7-ene (DBU) and 1,4-diazabicyclo-[2,2,2]-octane (DABCO), are preferably suitable.

In process (a) according to the invention, the reaction temperatures can be varied within a relatively wide range. In general, the reaction is carried out at temperatures between -50° C. and +50° C., preferably at temperatures between -40° C. and +40° C.

For carrying out process (a) according to the invention, between 1 and 5 moles, preferably between 1 and 4 moles, of sulphonyl halide or sulphonic anhydride of the formula (III) are generally employed per mole of aminotriazolinone of the formula (II). In the case where disulphonylated compounds of the formula (I, R² =--SO₂ --R¹) are to be prepared in a one-pot reaction, at least 2 moles of sulphonyl halide or sulphonic anhydride (III) are to be employed per mole of aminotriazolinone (II).

The reactants can be combined in any desired sequence. In a preferred embodiment of process (a) according to the invention, the starting substances of the formula (II) and (III) are stirred at room temperature with a diluent, and the acid acceptor is slowly metered into this mixture, if appropriate after cooling. The reaction mixture is then stirred until the reaction is complete.

Working up can be carried out in a customary manner, for example by washing with water--if approppriate after concentrating and/or diluting the mixture with a virtually water-immiscible organic solvent, such as, for example, methylene chloride--, drying and filtering the mixture, and carefully distilling off the solvent from the filtrate. The crude product, which remains in the residue, can be purified further in a customary manner, for example by column chromatography and/or by recrystallization.

The compounds which can be obtained as described above of the formula (I) in which R² represents the group --SO₂ --R¹ can be reacted to give compounds of the formula (I) in which R² represents hydrogen by reaction with desulphonylating agents, if appropriate in the presence of diluents.

In this connection, desulphonylating agents are taken to mean substances which can eliminate a sulphonyl group from N,N-bis-sulphonyl-amino compounds. Suitable desulphonylating agents are above all alkali metal hydroxides or alkaline earth metal hydroxides, such as sodium hydroxide, potassium hydroxide and calcium hydroxide, alkali metal alkoxides, such as sodium methoxide, potassium methoxide, sodium ethoxide and potassium ethoxide, furthermore ammonia, alkylamines, such as methylamine, ethylamine, propylamine and butylamine, and also dialkylamines, such as dimethylamine and diethylamine. It is preferred to employ ammonia as the desulphonylating agent

The desulphonylation is preferably carried out in the presence of diluents. Preferred diluents, besides water, are polar organic solvents, such as methanol, ethanol, propanol, isopropanol, 2-methoxyethanol, 2-ethoxy-ethanol and dioxane.

The desulphonylation is generally carried out at temperatures between 0° C. and 150° C., preferably at temperatures between 20° C. and 100° C.

In general, the reactants for desulphonylation are mixed at room temperature and stirred until the reaction is complete, if appropriate at increased temperature. For working up, the mixture is concentrated, if appropriate, diluted with water, and acidified using a strong acid, such as, for example, hydrochloric acid. The product, which is obtained in this process in the form of crystals (I, R² =H), can be isolated by filtering off with suction.

If desired, salts can be prepared from the compounds of the general formula (I) according to the invention. Such salts are obtained in a simple manner by customary salt formation methods, for example by dissolving or dispersing a compound of the formula (I) in a suitable solvent, such as, for example, water, methanol, ethanol or acetone, and adding a suitable acid or base. The salts can then be isolated by concentration or filtering off with suction, if appropriate after stirring for some time.

Formula (IV) provides a general definition of the sulphonylaminotriazolinones to be used as starting substances in process (b) according to the invention for the preparation of compounds of the formula (I).

In formula (IV), R¹, R² and R³ preferably, or in particular, have the meanings which have already been indicated above in connection with the description of the compounds of the formula (I) according to the invention as being preferred, or particularly preferred, for R¹, R² and R³.

Starting substances of the formula (IV) which may be mentioned by way of example are:

4-(phenylsulphonylamino)-, 4-(2-chloro-phenylsulphonylamino)- 4-(2-fluoro-phenylsulphonylamino)-, 4-(2-bromophenylsulphonylamino)-, 4-(2-methyl-phenylsulphonylamino)-, 4-(2-methoxy-phenylsulphonylamino)-, 4-(2-trifluoromethyl-phenyl-sulphonylamino)-, 4-(2-methylthio-phenylsulphonylamino)-, 4-(2-methylsulphonyl-phenylsulphonylamino)-, 4-(2-isopropoxycarbonyl-phenylsulphonylamino)-, 4-(2-chloro-6-methylphenylsulphonylamino)-, 4-(2-phenyl-phenylsulphonylamino)-, 4-(2-difluoromethoxy-phenylsulphonylamino)-, 4-(2-trifluoromethoxy-phenylsulphonylamino)-, 4-(2-dimethylaminosulphonylphenylsulphonylamino)-, 4-(2-methoxycarbonyl-phenylsulphonylamino)-, 4-(2-ethoxycarbonyl-phenylsulphonylamino)-, 4-(2-chloro-phenylmethyl-sulphonylamino)-, 4-(2-methoxycarbonyl-phenylmethylsulphonylamino)-, 4-(2-ethoxycarbonylphenylmethylsulphonylamino)-, 4-(2-difluoromethoxy-phenylmethylsulphonylamino)-, 4-(2-trifluoromethoxy-phenylmethylsulphonylamino)-, 4-(1-methyl-4-methoxycarbonyl-pyrazol-5-yl-sulphonylamino)-, 4-(1-methyl-4-ethoxycarbonyl-pyrazol-5-yl-sulphonylamino)-, 4-(1-methyl-4-bromo-pyrazol-5-yl-sulphonylamino)-, 4-(2-methoxycarbonyl-thiophen-3-yl-sulphonylamino)-, 4-(3-trifluoromethyl-pyridin-2-yl-sulphonylamino)-, 4-(3-dimethylaminocarbonyl-pyridin-2-yl-sulphonylamino) and 4-(1-isoquinolinyl-4-ethoxycarbonyl-pyrazol-5-yl-sulphonylamino)-2,4-dihydro-3H-1,2,4-triazol-3-one, -5-methyl-2,4-dihydro-3H-1,2,4-triazol-3-one, -5-ethyl-2,4-dihydro-3H-1,2,4-triazol-3-one, -5-propyl-2,4-dihydro-3H-1,2,4-triazol-3 -one, -5-isopropyl-2,4-dihydro-3H-1,2,4-triazol-3-one, -5-trifluoromethyl-2,4-dihydro-3H-1,2,4-triazol-3-one, -5-methoxy-2,4-dihydro-3H-1,2,4-triazol-3-one, -5-methylthio-2,4-dihydro-3H-1,2,4-triazol-3-one, -5-t-butyl-2,4-dihydro-3H,1,2,4-triazol-3-one, -5-benzyl-2 4-dihydro-3H-1,2,4-triazol-3-one and -5-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one.

The sulphonylaminotriazolinones of the formula (IV) to be used as starting substances were hitherto unknown from the literature. The new compounds of the formula (IV) are obtained when aminotriazolinones of the general formula (VI) ##STR52## in which R³ has the above-mentioned meaning,

are reacted with sulphonyl halides or sulphonic anhydrides of the general formula (III)

    R.sup.1 --SO.sub.2 --Q                                     (III)

in which

R¹ and Q have the above-mentioned meanings,

if appropriate, the presence of an acid acceptor, such as, for example, triethylamine, pyridine or 1,4-diazabicyclo-[2,2,2]-octane (DABCO), and, if appropriate, in the presence of a diluent, such as, for example, methylene chloride, tetrahydrofuran or dioxane, at temperatures between -50° C. and +50° C.

As far as the starting substances of the formulae (III) and (VI) are concerned, the instructions indicated above in the description of process (a) according to the invention, relating to these substances, are also true in this connection.

As far as the azines of the formula (V) are concerned, which are to be used as starting substances in process (b) according to the invention, the instructions indicated above in the description of process (a) according to the invention are also true in this connection.

Process (b) according to the invention is preferably carried out using diluents. Suitable solvents are those which have been indicated above as diluents in process (a).

Process (b) is preferably carried out in the presence of an acid acceptor. Suitable acid acceptors are the same acid-binding agents which have been indicated above in process (a).

In process (b) according to the invention, the reaction temperatures can be varied within a relatively wide range. In general, the process is carried out at temperatures between 0° C. and +150° C., preferably at temperatures between +20° C. and +120° C.

Process (b) according to the invention is generally carried out under atmospheric pressure. However, it is also possible to carry out the process under increased or reduced pressure.

For carrying out process (b) according to the invention, the starting substances required in each case are generally employed in approximately equimolar amounts. However, it is also possible to use one of the two components employed in each case in a relatively large excess. The reactions are generally carried out in a suitable diluent in the presence of an acid acceptor, and the reaction mixture is stirred for several hours at the specific temperature required. Working-up in process (b) according to the invention is carried out in each case by customary methods.

The active compounds according to the invention can be used as defoliants, desiccants, agents for destroying broad-leaved plants and, especially, as weedkillers. By weeds, in the broadest sense, there are to be understood all plants which grow in locations where they are undesired. Whether the substances according to the invention act as total or selective herbicides depends essentially on the amount used.

The active compounds according to the invention can be used, for example, in connection with the following plants:

Dicotyledon weeds of the genera: Sinapis, Lepidium, Galium, Stellaria, Matricaria, Anthemis, Galinsoga, Chenopodium, Urtica, Senecio, Amaranthus, Portulaca, Xanthium, Convolvulus, Ipomoea, Polygonum, Sesbania, Ambrosia, Cirsium, Carduus, Sonchus, Solanum, Rorippa, Rotala, Lindernia, Lamium, Veronica, Abutilon, Emex, Datura, Viola, Galeopsis, Papaver and Centaurea.

Dicotyledon cultures of the genera: Gossypium, Glycine, Beta, Daucus, Phaseolus, Pisum, Solanum, Linum, Ipomoea, Vicia, Nicotiana, Lycopersicon, Arachis, Brassica, Lactuca, Cucumis and Cucurbita.

Monocotyledon weeds of the genera: Echinochloa, Setaria, Panicum, Digitaria, Phleum, Poa, Festuca, Eleusine, Brachiaria, Lolium, Bromus, Avena, Cyperus, Sorghum, Agropyron, Cynodon, Monochoria, Fimbristylis, Sagittaria, Eleocharis, Scirpus, Paspalum, Ischaemum, Sphenoclea, Dactyloctenium, Agrostis, Alopecurus and Apera.

Monocotyledon cultures of the genera: Oryza, Zea, Triticum, Hordeum, Avena, Secale, Sorghum, Panicum, Saccharum, Ananas, Asparagus and Allium.

However, the use of the active compounds according to the invention is in no way restricted to these genera, but also extends in the same manner to other plants.

The compounds are suitable, depending on the concentration, for the total combating of weeds, for example on industrial terrain and rail tracks, and on paths and squares with or without tree plantings. Equally, the compounds can be employed for combating weeds in perennial cultures, for example afforestations, decorative tree plantings, orchards, vineyards, citrus groves, nut orchards, banana plantations, coffee plantations, tea plantations, rubber plantations, oil palm plantations, cocoa plantations, soft fruit plantings and hopfields, and for the selective combating of weeds in annual cultures.

The compounds of the formula (I) according to the invention are particularly suitable for selectively combating dicotyledon weeds in monocotyledon crops, above all using the post-emergence method.

The active compounds can be converted to the customary formulations, such as solutions, emulsions, wettable powders, suspensions, powders, dusting agents, pastes, soluble powders, granules, suspension-emulsion concentrates, natural and synthetic materials impregnated with active compound, and very fine capsules in polymeric substances.

These formulations are produced in known manner, for example by mixing the active compounds with extenders, that is liquid solvents and/or solid carriers, optionally with the use of surface-active agents, that is emulsifying agents and/or dispersing agents and/or foam-forming agents.

In the case of the use of water as an extender, organic solvents can, for example, also be used as auxiliary solvents. As liquid solvents, there are suitable in the main: aromatics, such as xylene, toluene or alkylnaphthalenes, chlorinated aromatics and chlorinated aliphatic hydrocarbons, such as chlorobenzenes, chloroethylenes or methylene chloride, aliphatic hydrocarbons, such as cyclohexane or paraffins, for example petroleum fractions mineral and vegetable oils, alcohols, such as butanol or glycol as well as their ethers and esters, ketones, such as acetone, methyl ethyl ketone, methyl isobutyl ketone or cyclohexanone, strongly polar solvents, such as dimethylformamide and dimethyl sulphoxide, as well as water.

As solid carriers there are suitable: for example ammonium salts and ground natural minerals, such as kaolins, clays, talc, chalk, quartz, attapulgite, montmorillonite or diatomaceous earth, and ground synthetic minerals, such as highly disperse silica, alumina and silicates, as solid carriers for granules there are suitable: for example crushed and fractionated natural rocks such as calcite, marble, pumice, sepiolite and dolomite, as well as synthetic granules of inorganic and organic meals, and granules of organic material such as sawdust, coconut shells, corn cobs and tobacco stalks; as emulsifying and/or foam-forming agents there are suitable: for example non-ionic and anionic emulsifiers, such as polyoxyethylene-fatty acid esters, polyoxyethylene-fatty alcohol ethers, for example alkylaryl polyglycol ethers, alkylsulphonates, alkyl sulphates, arylsulphonates as well as albumin hydrolysis products; as dispersing agents there are suitable: for example lignin-sulphite waste liquors and methylcellulose.

Adhesives such as carboxymethylcellulose and natural and synthetic polymers in the form of powders, granules or latices, such as gum arabic, polyvinyl alcohol and polyvinyl acetate, as well as natural phospholipids, such as cephalins and lecithins, and synthetic phospholipids, can be used in the formulations. Further additives can be mineral and vegetable oils.

It is possible to use colorants such as inorganic pigments, for example iron oxide, titanium oxide and Prussian Blue, and organic dyestuffs, such as alizarin dyestuffs, azo dyestuffs and metal phthalocyanine dyestuffs, and trace nutrients such as salts of iron, manganese, boron, copper, cobalt, molybdenum and zinc.

The formulations in general contain between 0.1 and 95 percent by weight of active compound, preferably between 0.5 and 90%.

The active compounds according to the invention, as such or in the form of their formulations, can also be used, for combating weeds, s mixtures with known herbicides, finished formulations or tank mixes being possible.

Suitable herbicides for the mixtures are known herbicides, such as, for example, 1-amino-6-ethylthio-3-(2,2-dimethylpropyl)-1,3,5-triazine-2,4(1H,3H)-dione (AMETHYDIONE) or N-(2-benzothiazolyl)-N,N'-dimethylurea (METABENZTHIAZURON) for combating weeds in cereals; 4-amino-3-methyl-6-phenyl-1,2,4-triazin-5(4H)-one (METAMITRON) for combating weeds in sugar beets and 4-amino-6-(1,1-dimethylethyl)-3-methylthio-1,2,4-triazin-5(4H)-one (METRIBUZIN) for combating weeds in soy beans; 2,4-dichlorophenoxyacetic acid (2,4D); 4-(2,4-dichlorophenoxy)-butyric acid (2,4-DB); 2,4-dichlorophenoxypropionic acid (2,4-DP); 3-isopropyl-2,1,3-benzothiadiazin-4-one, 2,2-dioxide (BENTAZONE); methyl 5-(2,4-dichlorophenoxy)-2-nitrobenzoate (IFENOX); 3,5-dibromo-4-hydroxy-benzonitrile (BROMOXYNIL); 2-chloro-N{[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)-amino]-carbonyl}benzenesulphonamide (CHLORSULFURON); N,N-dimethyl-N'-(3-chloro-4-methylphenyl)-urea (CHLORTOLURON); 2-[4-(2 4-dichlorophenoxy)-phenoxy]-propionic acid, its methyl ester or its ethyl ester (DICLOFOP); 2-{4-[(6-chloro-2-benzoxazolyl)-oxy]-phenoxy}-propanoic acid, its methyl ester or its ethyl ester (FENOXAPROP); [(4-amino-3,5-dichloro-6-fluoro-2-pyridinyl)-oxy]-acetic acid or its 1-methylheptyl ester (FLUROXYPYR); methyl 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-4(5)-methylbenzoate (IMAZAMETHABENZ); 3,5-diiodo-4-hydroxybenzonitrile (IOXYNIL); N,N-dimethyl-N'-(4-isopropylphenyl)-urea (ISOPROTURON); (2-methyl-4-chlorophenoxy)-acetic acid (MCPA); (4-chloro-2-methylphenoxy)-propionic acid (MCPP); N-methyl-2-(1,3-benzothiazol-2-yloxy)-acetanilide (MEFENACET); 2-{[[((4-methoxy-6-methyl-1,3,5-triazin-2-yl)-amino)-carbonyl]-amino]-sulphonyl}-benzoic acid or its methyl ester (METSULFURON); N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitroaniline (PENDIMETHALIN); 0-(6-chloro-3-phenyl-pyridazin-4-yl) S-octyl thiocarbonate (PYRIDATE); 2-[1-(ethoxamino)-butylidene]-5-(2-ethylthiopropyl)-1,3-cyclohexadione (SETHOXYDIM); 4-ethylamino-2-t-butylamino-6-methylthio-s-triazine (TERBUTRYNE) and methyl 3-[[[[4-methoxy-6-methyl-1,3,5-triazin-2-yl)-amino]-carbonyl]amino]-sulphonyl]-thiophene-2-carboxylate (THIAMETURON). Surprisingly, some mixtures also show synergistic action.

Mixtures with other known active compounds, such as fungicides, insecticides, acaricides, nematicides, bird repellents plant nutrients and agents which improve soil structure, are also possible.

The active compounds can be used as such, in the form of their formulations or in the use forms prepared therefrom by further dilution, such as ready-to-use solutions, suspensions, emulsions, powders, pastes and granules. They are used in the customary manner, for example by watering, spraying, atomizing or scattering.

The active compounds according to the invention can be applied either before or after emergence of the plants.

They can also be incorporated into the soil before sowing.

The amount of active compound used can vary within a substantial range. It depends essentially on the nature of the desired effect. In general, the amounts used are between 0.01 and 10 kg of active compound per hectare of soil surface, preferably between 0.05 and 5 kg per ha.

The preparation and use of the active compounds according to the invention can be seen from the following examples.

PREPARATION EXAMPLES Example 1 ##STR53##

(Process (a))

A mixture of 7.2 g (0.03 mol) of 4-amino-2-(4,6-dimethoxypyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one, 21.0 g (0.09 mol) of 2-methoxycarbonyl-benzenesulphonyl chloride and 50 ml of pyridine is stirred at 20° C. for 12 hours. The mixture is subsequently concentrated under a waterpump vacuum, and the residue is taken up in methylene chloride and washed with 2N hydrochloric acid. The mixture is dried using magnesium sulphate and then filtered, and the solvent is carefully distilled off from the filtrate under a waterpump vacuum.

12.0 g (63% of theory) of 4-[bis-(2-methoxycarbonylphenylsulphonyl)-amino]-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one are obtained as a crystalline residue of melting point 176° C.

Example 2 ##STR54##

A mixture of 6.4 g (0.01 mol) of 4-[bis-(2-methoxycarbonyl-phenylsulphonyl)-amino]-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one (cf. Example 1), 100 ml of methanol and 10 ml of concentrated aqueous ammonia is stirred at 50° C. for 60 minutes. The mixture is subsequently concentrated under a waterpump vacuum, and the residue is taken up in water and acidified using 2N hydrochloric acid. The product which is obtained in this process in the form of crystals is isolated by filtering off with suction.

4.0 g (92% of theory) of 4-(2-methoxycarbonyl-phenylsulphonylamino)-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one of melting point 192° C. are obtained.

Example 3 ##STR55##

(Process (a))

A mixture of 4.2 g (0.016 mol) of 4-amino-5-methyl-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one, 11.7 g (0.05 mol) of 2-methoxycarbonylbenzenesulphonyl chloride and 50 ml of pyridine is stirred at 20° C. for 12 hours, then diluted with ice-water and acidified using 2N hydrochloric acid, and the mixture is shaken with methylene chloride. The organic phase is separated off, dried using magnesium sulphate and filtered. The solvent is carefully distilled off from the filtrate under a waterpump vacuum.

3.8 g (50% of theory) of 4-(2-methoxycarbonyl-phenylsulphonylamino)-5-methyl-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one are obtained as a crystalline residue of melting point 174° C.

Example 4 ##STR56##

(Process (a))

A mixture of 5.7 g (0.02 mol) of 4-amino-5-methylthio-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one, 14.0 g (0.06 mol) of 2-methoxycarbonylbenzenesulphonyl chloride and 50 ml of pyridine is stirred at 20° C. for 48 hours. The mixture is subsequently concentrated under a waterpump vacuum, the residue is taken up in methylene chloride, and the mixture is washed using 2N hydrochloric acid, dried using magnesium sulphate and filtered. The filtrate is concentrated and the residue is purified by column chromatography on silica gel using methylene chloride/methanol (vol. 10:1).

3.0 g (31% of theory) of 4-(2-methoxycarbonyl-phenylsulphonylamino)-5-methylthio-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one of melting point 179° C. are obtained.

The compounds of the formula (I) which are listed in Table 2 below can be prepared analogously to Examples 1 to 4 and in accordance with the general description of the process according to the invention. ##STR57##

                                      TABLE 2                                      __________________________________________________________________________     Examples of the compounds of the formula (I)                                   Example                                                  Melting               No.  R.sup.1      R.sup.2      R.sup.3 R.sup.4                                                                              X Y  Z      point                                                                          (°C.)          __________________________________________________________________________                       H            H       SO.sub.2 CH.sub.3                                                                    N CH COCH.sub.3                                                                            191                   6                                                                                    ##STR58##   H            CH.sub.3                                                                               SO.sub.2 CH.sub.3                                                                    N CH COCH.sub.3                                                                            140                   7                                                                                    ##STR59##   H            CH.sub.3                                                                               OCH.sub.3                                                                            N CH COCH.sub.3                                                                            178                   8                                                                                    ##STR60##   H            CH.sub.3                                                                               OCH.sub.3                                                                            N CH COCH.sub.3                                                                            186                   9                                                                                    ##STR61##                                                                                   ##STR62##   H       CH.sub.3                                                                             N CH CCH.sub.3                    10                                                                                   ##STR63##   H            H       CH.sub.3                                                                             N CH CCH.sub.3                    11                                                                                   ##STR64##   Na           H       CH.sub.3                                                                             N CH CCH.sub.3                    12                                                                                   ##STR65##                                                                                   ##STR66##   H       CH.sub.3                                                                             N CH CCH.sub.3                    13                                                                                   ##STR67##   H            H       CH.sub.3                                                                             N CH CCH.sub.3                    14                                                                                   ##STR68##                                                                                   ##STR69##   H       CH.sub.3                                                                             N CH CCH.sub.3                    15                                                                                   ##STR70##   H            H       CH.sub.3                                                                             N CH CCH.sub.3                    16                                                                                   ##STR71##                                                                                   ##STR72##   H       CH.sub.3                                                                             N CH CCH.sub.3                    17                                                                                   ##STR73##   H            H       CH.sub.3                                                                             N CH CCH.sub.3                    18                                                                                   ##STR74##                                                                                   ##STR75##   H       CH.sub.3                                                                             N CH CCH.sub.3                    19                                                                                   ##STR76##   H            H       CH.sub.3                                                                             N CH CCH.sub.3                    20                                                                                   ##STR77##                                                                                   ##STR78##   H       CH.sub.3                                                                             N CH CCH.sub.3                    21                                                                                   ##STR79##                                                                                   ##STR80##   H       CH.sub.3                                                                             N N  CCH.sub.3                    22                                                                                   ##STR81##   H            H       CH.sub.3                                                                             N CH CCH.sub.3                    23                                                                                   ##STR82##                                                                                   ##STR83##   H       CH.sub.3                                                                             N CH CCH.sub.3                    24                                                                                   ##STR84##                                                                                   ##STR85##   H       CH.sub.3                                                                             N CH CCH.sub.3                    25                                                                                   ##STR86##   H            H       CH.sub.3                                                                             N CH CCH.sub.3                    26                                                                                   ##STR87##   H            H       CH.sub.3                                                                             N CH CCH.sub.3                    27                                                                                   ##STR88##   H            H       CH.sub.3                                                                             N CH CCH.sub.3                    28                                                                                   ##STR89##   H            H       CH.sub.3                                                                             N CH CCH.sub.3                    29                                                                                   ##STR90##   H            H       CH.sub.3                                                                             N CH CCH.sub.3                    30                                                                                   ##STR91##                                                                                   ##STR92##   H       CH.sub.3                                                                             N CH COCH.sub.3                   31                                                                                   ##STR93##   H            H       CH.sub.3                                                                             N CH COCH.sub.3                   32                                                                                   ##STR94##                                                                                   ##STR95##   H       CH.sub.3                                                                             N CH COCH.sub.3                   33                                                                                   ##STR96##   H            H       CH.sub.3                                                                             N CH COCH.sub.3                   34                                                                                   ##STR97##                                                                                   ##STR98##   H       CH.sub.3                                                                             N CH COCH.sub.3                   35                                                                                   ##STR99##   H            H       CH.sub.3                                                                             N CH COCH.sub.3                   36                                                                                   ##STR100##  H            H       CH.sub.3                                                                             N CH COCH.sub.3                                                                            181                   37                                                                                   ##STR101##  H            H       CH.sub.3                                                                             N CH COCH.sub.3                   38                                                                                   ##STR102##                                                                                  ##STR103##  H       CH.sub.3                                                                             N CH COCH.sub.3                   39                                                                                   ##STR104##                                                                                  ##STR105##  H       CH.sub.3                                                                             N CH COCH.sub.3                   40                                                                                   ##STR106##                                                                                  ##STR107##  H       CH.sub.3                                                                             N CH COCH.sub.3                   41                                                                                   ##STR108##  H            H       CH.sub.3                                                                             N CH COCH.sub.3                   42                                                                                   ##STR109##                                                                                  ##STR110##  H       CH.sub.3                                                                             N CH COCH.sub.3                   43                                                                                   ##STR111##  H            H       CH.sub.3                                                                             N CH COCH.sub.3                   44                                                                                   ##STR112##                                                                                  ##STR113##  H       CH.sub.3                                                                             N CH COCH.sub.3                   45                                                                                   ##STR114##  H            H       CH.sub.3                                                                             N CH COCH.sub.3                   46                                                                                   ##STR115##                                                                                  ##STR116##  H       CH.sub.3                                                                             N CH COCH.sub.3                   47                                                                                   ##STR117##  H            H       CH.sub.3                                                                             N CH COCH.sub.3                                                                            219                   48                                                                                   ##STR118##  H            H       CH.sub.3                                                                             N CH COCH.sub.3                   49                                                                                   ##STR119##  H            H       CH.sub.3                                                                             N CH COCH.sub.3                   50                                                                                   ##STR120##  H            H       CH.sub.3                                                                             N CH COCH.sub.3                   51                                                                                   ##STR121##                                                                                  ##STR122##  H       CH.sub.3                                                                             N CH CCH.sub.3                    52                                                                                   ##STR123##  H            H       CH.sub.3                                                                             N CH CCH.sub.3                    53                                                                                   ##STR124##                                                                                  ##STR125##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   54                                                                                   ##STR126##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   55                                                                                   ##STR127##                                                                                  ##STR128##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   56                                                                                   ##STR129##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   57                                                                                   ##STR130##                                                                                  ##STR131##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   58                                                                                   ##STR132##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   59                                                                                   ##STR133##                                                                                  ##STR134##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   60                                                                                   ##STR135##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   61                                                                                   ##STR136##                                                                                  ##STR137##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   62                                                                                   ##STR138##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   63                                                                                   ##STR139##                                                                                  ##STR140##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   64                                                                                   ##STR141##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   65                                                                                   ##STR142##                                                                                  ##STR143##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   66                                                                                   ##STR144##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   67                                                                                   ##STR145##                                                                                  ##STR146##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   68                                                                                   ##STR147##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                                                                            208                   69                                                                                   ##STR148##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   70                                                                                   ##STR149##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   71                                                                                   ##STR150##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   72                                                                                   ##STR151##                                                                                  ##STR152##  H       CF.sub. 3                                                                            N CH COCH.sub.3                   73                                                                                   ##STR153##                                                                                  ##STR154##  H       OCH.sub.3                                                                            N CH CCl                          74                                                                                   ##STR155##  H            H       CF.sub.3                                                                             N CH COCH.sub.3                   75                                                                                   ##STR156##                                                                                  ##STR157##  H       CF.sub.3                                                                             N CH COCH.sub.3                   76                                                                                   ##STR158##  H            H       CF.sub.3                                                                             N CH COCH.sub.3                   77                                                                                   ##STR159##  H            H       CF.sub.3                                                                             N CH COCH.sub.3                   78                                                                                   ##STR160##  H            H       OCH.sub.3                                                                            N CH CCl                          79                                                                                   ##STR161##                                                                                  ##STR162##  H       OCH.sub.3                                                                            N CH CCl                          80                                                                                   ##STR163##  H            H       OCH.sub.3                                                                            N CH CCl                          81                                                                                   ##STR164##  H            H       OCH.sub.3                                                                            N CH CCl                          82                                                                                   ##STR165##                                                                                  ##STR166##  H       OCH.sub.3                                                                            N CH CCl                          83                                                                                   ##STR167##                                                                                  ##STR168##  H       OCH.sub.3                                                                            N CH CCl                          84                                                                                   ##STR169##  H            H       OCH.sub.3                                                                            N CH CCl                          85                                                                                   ##STR170##                                                                                  ##STR171##  H       OCH.sub.3                                                                            N CH COCHF.sub.2                  86                                                                                   ##STR172##  H            H       OCH.sub.3                                                                            N CH C OCHF.sub.2                 87                                                                                   ##STR173##                                                                                  ##STR174##  H       OCH.sub.3                                                                            N CH COCHF.sub.2                  88                                                                                   ##STR175##  H            H       OCH.sub.3                                                                            N CH COCHF.sub.2                  89                                                                                   ##STR176##                                                                                  ##STR177##  H       OCH.sub.3                                                                            N CH COCHF.sub.2                  90                                                                                   ##STR178##  H            H       OCH.sub.3                                                                            N CH COCHF.sub.2                  91                                                                                   ##STR179##                                                                                  ##STR180##  H       OCHF.sub.2                                                                           N CH COCHF.sub.2                                                                           198                   92                                                                                   ##STR181##  H            H       OCHF.sub.2                                                                           N CH COCHF.sub.2                                                                           180                   93                                                                                   ##STR182##                                                                                  ##STR183##  H       OCHF.sub.2                                                                           N CH COCHF.sub.2                  94                                                                                   ##STR184##  H            H       OCHF.sub.2                                                                           N CH COCHF.sub.2                  95                                                                                   ##STR185##                                                                                  ##STR186##  H       OCHF.sub.2                                                                           N CH COCHF.sub.2                  96                                                                                   ##STR187##  H            H       OCHF.sub.2                                                                           N CH COCHF.sub.2                  97                                                                                   ##STR188##                                                                                  ##STR189##  H       OCHF.sub.2                                                                           N CH COCHF.sub.2                  98                                                                                   ##STR190##  H            H       OCHF.sub.2                                                                           N CH COCHF.sub.2                  99                                                                                   ##STR191##                                                                                  ##STR192##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   100                                                                                  ##STR193##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   101                                                                                  ##STR194##                                                                                  ##STR195##  H       OCH.sub.3                                                                            N CH CCl                          102                                                                                  ##STR196##  H            H       OCH.sub.3                                                                            N CH CCl                          103                                                                                  ##STR197##                                                                                  ##STR198##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   104                                                                                  ##STR199##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   105                                                                                  ##STR200##                                                                                  ##STR201##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   106                                                                                  ##STR202##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   107                                                                                  ##STR203##                                                                                  ##STR204##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   108                                                                                  ##STR205##                                                                                  ##STR206##  H       OCH.sub.3                                                                            N CH COCHF.sub.2                  109                                                                                  ##STR207##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   110                                                                                  ##STR208##                                                                                  ##STR209##  H       OCH.sub.3                                                                            N CH COCHF.sub.2                  111                                                                                  ##STR210##  H            H       CH.sub.3                                                                             N N  CCH.sub.3                    112                                                                                  ##STR211##                                                                                  ##STR212##  H       CH.sub.3                                                                             N N  CCH.sub.3                    113                                                                                  ##STR213##                                                                                  ##STR214##  H       CH.sub.3                                                                             N N  CCH.sub.3                    114                                                                                  ##STR215##                                                                                  ##STR216##  H       CH.sub.3                                                                             N N  COCH.sub.3                   115                                                                                  ##STR217##  H            H       CH.sub.3                                                                             N N  COCH.sub.3                   116                                                                                  ##STR218##                                                                                  ##STR219##  H       CH.sub.3                                                                             N N  COCH.sub.3                   117                                                                                  ##STR220##  H            H       CH.sub.3                                                                             N N  COCH.sub.3                   118                                                                                  ##STR221##                                                                                  ##STR222##  H       CH.sub.3                                                                             N N  COCH.sub.3                   119                                                                                  ##STR223##  H            H       CH.sub.3                                                                             N N  COCH.sub.3                   120                                                                                  ##STR224##  Na           H       CH.sub.3                                                                             N N  COCH.sub.3                   121                                                                                  ##STR225##                                                                                  ##STR226##  H       CH.sub.3                                                                             N N  COCH.sub.3                   122                                                                                  ##STR227##  H            H       CH.sub.3                                                                             N N  COCH.sub.3                   123                                                                                  ##STR228##                                                                                  ##STR229##  H       OCH.sub.3                                                                            N N  COCH.sub. 3                  124                                                                                  ##STR230##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   125                                                                                  ##STR231##                                                                                  ##STR232##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   126                                                                                  ##STR233##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   127                                                                                  ##STR234##                                                                                  ##STR235##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   128                                                                                  ##STR236##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   129                                                                                  ##STR237##                                                                                  ##STR238##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   130                                                                                  ##STR239##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   131                                                                                  ##STR240##                                                                                  ##STR241##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   132                                                                                  ##STR242##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   133                                                                                  ##STR243##                                                                                  ##STR244##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   134                                                                                  ##STR245##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   135                                                                                  ##STR246##                                                                                  ##STR247##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   136                                                                                  ##STR248##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   137                                                                                  ##STR249##                                                                                  ##STR250##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   138                                                                                  ##STR251##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   139                                                                                  ##STR252##                                                                                  ##STR253##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   140                                                                                  ##STR254##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                                                                            201                   141                                                                                  ##STR255##                                                                                  ##STR256##  H       OCHF.sub.2                                                                           N CH COCHF.sub.2                  142                                                                                  ##STR257##                                                                                  ##STR258##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   143                                                                                  ##STR259##                                                                                  ##STR260##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   144                                                                                  ##STR261##                                                                                  ##STR262##  H       CH.sub.3                                                                             N N  CCH.sub.3                    145                                                                                  ##STR263##  H            H       CH.sub.3                                                                             N N  CCH.sub.3                    146                                                                                  ##STR264##                                                                                  ##STR265##  H       CH.sub.3                                                                             N N  CCH.sub.3                    147                                                                                  ##STR266##                                                                                  ##STR267##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   148                                                                                  ##STR268##                                                                                  ##STR269##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   149                                                                                  ##STR270##                                                                                  ##STR271##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   150                                                                                  ##STR272##                                                                                  ##STR273##  H       OCH.sub.3                                                                            N N  CCl                          151                                                                                  ##STR274##                                                                                  ##STR275##  H       C.sub.2 H.sub.5                                                                      N N  COCH.sub.3                   152                                                                                  ##STR276##                                                                                  ##STR277##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   153                                                                                  ##STR278##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   154                                                                                  ##STR279##  H            H       OCH.sub.3                                                                            N N  CCH.sub.3                    155                                                                                  ##STR280##                                                                                  ##STR281##  H       OCH.sub.3                                                                            N N  CNHC.sub.2 H.sub.5           156                                                                                  ##STR282##                                                                                  ##STR283##  H       OC.sub.2 H.sub.5                                                                     N N  CNHCH.sub.3                  157                                                                                  ##STR284##                                                                                  ##STR285##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   158                                                                                  ##STR286##                                                                                  ##STR287##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   159                                                                                  ##STR288##                                                                                  ##STR289##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   160                                                                                  ##STR290##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   161                                                                                  ##STR291##                                                                                  ##STR292##  H       OCH.sub.3                                                                            N CH COCH.sub.3                   162                                                                                  ##STR293##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   163                                                                                  ##STR294##                                                                                  ##STR295##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   164                                                                                  ##STR296##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   165                                                                                  ##STR297##                                                                                  ##STR298##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   166                                                                                  ##STR299##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   167                                                                                  ##STR300##                                                                                  ##STR301##  H       OCH.sub.3                                                                            N N  COCH.sub.3                   168                                                                                  ##STR302##                                                                                  ##STR303##  H       CH.sub.3                                                                             N CH CCH.sub.3                    169                                                                                  ##STR304##  H            H       CH.sub.3                                                                             N CH CCH.sub.3                    170                                                                                  ##STR305##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   171                                                                                  ##STR306##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   172                                                                                  ##STR307##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   173                                                                                  ##STR308##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   174                                                                                  ##STR309##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   175                                                                                  ##STR310##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   176                                                                                  ##STR311##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   177                                                                                  ##STR312##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   178                                                                                  ##STR313##  H            H       OCH.sub.3                                                                            N N  COCH.sub.3                   179                                                                                  ##STR314##  H            CH.sub.3                                                                               CH.sub.3                                                                             N CH CCH.sub.3                                                                             233                   180                                                                                  ##STR315##  H            CH.sub.3                                                                               CH.sub.3                                                                             N CH CCH.sub.3                    181                                                                                  ##STR316##  H            SCH.sub.3                                                                              CH.sub.3                                                                             N CH CCH.sub.3                    182                                                                                  ##STR317##  H            CH.sub.3                                                                               CH.sub.3                                                                             N CH CCH.sub.3                    183                                                                                  ##STR318##  H            SCH.sub.3                                                                              OCH.sub.3                                                                            N CH COCH.sub.3                   184                                                                                  ##STR319##  H            CH.sub.3                                                                               OCH.sub.3                                                                            N N  COCH.sub.3                   185                                                                                  ##STR320##  H            CH.sub.3                                                                               CH.sub.3                                                                             N N  COCH.sub.3                   186                                                                                  ##STR321##  H            CH.sub.3                                                                               CH.sub.3                                                                             N N  COCH.sub.3                   187                                                                                  ##STR322##  H            CH.sub.3                                                                               OCH.sub.3                                                                            N N  COCH.sub.3                                                                            202                   188                                                                                  ##STR323##  H            CH.sub.3                                                                               OCH.sub.3                                                                            N CH CCl                          189                                                                                  ##STR324##  H            CH.sub.3                                                                               OCH.sub.3                                                                            N CH COCH.sub.3                   190                                                                                  ##STR325##  H            CH.sub.3                                                                               OCH.sub.3                                                                            N N  COCH.sub.3                   191                                                                                  ##STR326##  H            CH.sub.3                                                                               CH.sub.3                                                                             N N  COCH.sub.3                   192                                                                                  ##STR327##                                                                                  ##STR328##  H       CH.sub.3                                                                             N CH CCH.sub.3                    193                                                                                  ##STR329##  H            H       CH.sub.3                                                                             N CH CCH.sub.3                    194                                                                                  ##STR330##  H            SCH.sub.3                                                                              CH.sub.3                                                                             N N  COCH.sub.3                   195                                                                                  ##STR331##  H            SCH.sub.3                                                                              CH.sub.3                                                                             N N  COCH.sub.3                   196                                                                                  ##STR332##  H            SCH.sub.3                                                                              OCH.sub.3                                                                            N N  COCH.sub.3                   197                                                                                  ##STR333##  H            H       SO.sub.2 CH.sub.3                                                                    CH                                                                               N  COCH.sub.3                   198                                                                                  ##STR334##  H            CH.sub. 3                                                                              SO.sub.2 CH.sub.3                                                                    CH                                                                               N  COCH.sub.3                   199                                                                                  ##STR335##                                                                                  ##STR336##  CH.sub.3                                                                               OCHF.sub.2                                                                           CH                                                                               N  COCHF.sub.2                                                                           200                   200                                                                                  ##STR337##                                                                                  ##STR338##  C.sub.2 H.sub.5                                                                        CH.sub.3                                                                             N N  COCH.sub.3                   201                                                                                  ##STR339##  H            CH(CH.sub.3).sub.2                                                                     OCH.sub.3                                                                            N CH COCH.sub.3                   202                                                                                  ##STR340##  H            CH.sub.2 CH(CH.sub.3).sub.2                                                            OCH.sub.3                                                                            N N  COCH.sub.3                   203                                                                                  ##STR341##  H            C(CH.sub.3).sub.3                                                                      CH.sub.3                                                                             N CH COCH.sub.3                   204                                                                                  ##STR342##  H            C(CH.sub.3).sub.3                                                                      OCH.sub.3                                                                            N CH COCH.sub.3                   205                                                                                  ##STR343##  H            CF.sub.3                                                                               CH.sub.3                                                                             N N  COCH.sub.3                   206                                                                                  ##STR344##  H            CH.sub.3                                                                               OCHF.sub.2                                                                           N CH COCHF.sub.2                                                                           118                   207                                                                                  ##STR345##  H            CH.sub.3                                                                               OCH.sub.3                                                                            N CH COCH.sub.3                                                                            198                   208                                                                                  ##STR346##  H            C.sub.2 H.sub.5                                                                        OCH.sub.3                                                                            N CH COCH.sub.3                                                                            174                   209                                                                                  ##STR347##                                                                                  ##STR348##  CH.sub.3                                                                               OCH.sub.3                                                                            N CH COCH.sub.3                                                                            204                   210                                                                                  ##STR349##  H            C.sub.3 H.sub.7                                                                        OCH.sub.3                                                                            N CH COCH.sub.3                                                                            179                   211                                                                                  ##STR350##                                                                                  ##STR351##  CH(CH.sub.3).sub.2                                                                     OCH.sub.3                                                                            N CH COCH.sub.3                                                                            184                   212                                                                                  ##STR352##                                                                                  ##STR353##  CH.sub.3                                                                               CH.sub.3                                                                             N CH COCH.sub.3                   213                                                                                  ##STR354##                                                                                  ##STR355##  CH.sub.3                                                                               CH.sub.3                                                                             N CH COCH.sub.3                   214                                                                                  ##STR356##                                                                                  ##STR357##  CH.sub.3                                                                               CH.sub.3                                                                             N CH COCH.sub.3                   215                                                                                  ##STR358##                                                                                  ##STR359##  CH.sub.3                                                                               CH.sub.3                                                                             N CH COCH.sub.3                   216                                                                                  ##STR360##  H            CH.sub.3                                                                               CH.sub.3                                                                             N CH C OCH.sub.3                  217                                                                                  ##STR361##  H            CH.sub.3                                                                               CH.sub.3                                                                             N CH COCH.sub.3                                                                            232                   218                                                                                  ##STR362##  H            CH.sub.3                                                                               CH.sub.3                                                                             N CH COCH.sub.3                                                                            247                   219                                                                                  ##STR363##                                                                                  ##STR364##  CH.sub.3                                                                               CH.sub.3                                                                             N CH COCH.sub.3                                                                            203                   220                                                                                  ##STR365##  H            CH.sub.3                                                                               CH.sub.3                                                                             N CH COCH.sub.3                   221                                                                                  ##STR366##  H            CH.sub.3                                                                               CH.sub.3                                                                             N CH COCH.sub.3                                                                            248                   222                                                                                  ##STR367##                                                                                  ##STR368##  CH.sub.3                                                                               CH.sub.3                                                                             N CH CCH.sub.3                                                                             206                   223                                                                                  ##STR369##  H            CH.sub.3                                                                               CH.sub.3                                                                             N CH CCH.sub.3                                                                             308                   224                                                                                  ##STR370##                                                                                  ##STR371##  CH.sub.3                                                                               CH.sub.3                                                                             N CH CCH.sub.3                                                                             195                   225                                                                                  ##STR372##  H            H       OCH.sub.3                                                                            N CH COCH.sub.3                   226                                                                                  ##STR373##  H            CH.sub.3                                                                               OCH.sub.3                                                                            N CH COCH.sub.3                   227                                                                                  ##STR374##  H            CH.sub.3                                                                               OCH.sub.3                                                                            N CH COCH.sub.3                   228                                                                                  ##STR375##  H            SCH.sub.3                                                                              OCH.sub.3                                                                            N CH COCH.sub.3                   229                                                                                  ##STR376##  H            CH.sub.3                                                                               OCH.sub.3                                                                            N N  COCH.sub.3                                                                            179                   230                                                                                  ##STR377##  H            CH.sub.3                                                                               OCH.sub.3                                                                            N N  COCH.sub.3                                                                            (amorphous)           231                                                                                  ##STR378##  H            CH.sub.3                                                                               OCH.sub.3                                                                            N N  COCH.sub.3                                                                             87                   __________________________________________________________________________

The preparation in accordance with process (b) of the compound listed as Example No. 221 in Table 2 is described below by way of example: ##STR379##

(process (b))

A mixture of 23.1 g (0.070 mol) of 4-(2-trifluoromethoxyphenylsulphonylamino)-5-methyl-2,4-dihydro-3H-1,2,4-triazol-3-one, 14.5 g (0.072 mol) of 4-methoxy-6-methyl-2-methylsulphonyl-pyrimidine, 50 g of potassium carbonate and 300 ml dioxane is refluxed for 6 hours. The mixture is allowed to cool and then filtered, the filter residue is washed with water and then taken up in methylene chloride and 5% strength hydrochloric acid, and the mixture is shaken. The organic phase is dried using sodium sulphate and filtered. After the filtrate has been concentrated, the residue is made to crystallize by trituration with ethanol, and the crystalline product is isolated by filtering off with suction.

6.0 g (21% of theory) of 4-(2-trifluoromethoxy-phenylsulphonylamino)-5-methyl-2-(4-methoxy-6-methylpyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one of melting point 248° C. are obtained.

STARTING SUBSTANCES OF THE FORMULA (II) Example (II-1) ##STR380##

A mixture of 7.0 g (0.05 mol) of 4-(1-methyl-ethylideneamino)-2,4-dihydro-3H-1,2,4-triazol-3-one, 21 g (0.15 mol) of potassium carbonate, 11.0 g (0.05 mol) of 4,6-dimethoxy-2-methylsulphonyl-pyrimidine and 100 ml of acetonitrile is refluxed for 3 hours. After the mixture has cooled, it is filtered and the filtrate is concentrated, the residue is taken up in 100 ml of ethanol/water (vol. 1:1), and the mixture is stirred for 3 hours at 60° C. after 1 ml of concentrated hydrochloric acid has been added. The mixture is concentrated, the residue is then triturated with ethanol, and the product obtained in the form of crystals is isolated by filtering off with suction.

9.7 g (82% of theory) of 4-amino-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one of melting point 238° C. are obtained.

Example (II-2) ##STR381##

A mixture of 4.0 g (0.02 mol) of 4-(1,3-dimethylbutylideneamino)-5-methyl-2,4-dihydro-3H-1,2,4-triazol-3-one, 8.3 g (0.06 mol) of potassium carbonate, 4.4 g (0.02 mol) of 4,6-dimethoxy-2-methylsulphonyl-pyrimidine and 100 ml of acetonitrile is refluxed for 3 hours. After the mixture has cooled it is filtered, the filtrate is concentrated, the residue is taken up in 100 ml of ethanol/water (vol. 1:1) and stirred for 60 minutes at 60° C. after 2 drops of concentrated hydrochloric acid have been added. The mixture is concentrated, the residue is stirred with saturated sodium hydrogen carbonate solution, and the crystalline product is isolated by filtering off with suction.

2.6 g (52% of theory) of 4-amino-5-methyl-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one of melting point 219° C. are obtained.

Example (II-3) ##STR382##

A mixture of 3.0 g (0.02 mol) of 4-amino-5-methylthio-2,4-dihydro-3H-1,2,4-triazol-3-one and 200 ml of acetone is refluxed for 4 hours after 0.1 g of p-toluenesulphonic acid has been added. The mixture is concentrated, the residue is taken up in 100 ml of acetonitrile, and the reaction mixture is refluxed for 12 hours after 8.3 g (0.06 mol) of potassium carbonate and 4.4 g (0.02 mol) of 4,6-dimethoxy-2-methylsulphonyl-pyrimidine have been added. The cooled mixture is filtered, the filtrate is concentrated, the residue is taken up in 100 ml of ethanol/water (vol. 1:1) and stirred for 3 hours at 60° C. after 2 ml of concentrated hydrochloric acid have been added. The mixture is concentrated, the residue is stirred with saturated sodium hydrogen carbonate solution, and the crystalline product is isolated by filtering off with suction.

4.9 g (86% of theory), of 4-amino-5-methylthio-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one of melting point 198° C. are obtained.

Example (II-4) ##STR383##

A mixture of 3.0 g (0.03 mol) of 4-amino-2,4-dihydro-3H-1,2,4-triazol-3-one, 8.7 g (0.03 mol) of 2-methanesulphonyl-4,6-bis-difluoromethoxy-pyrimidine and 12.4 g (0.09 mol) of potassium carbonate in 100 ml of dioxane is heated at 60° C. for approximately 4 hours with stirring. The mixture is concentrated in vacuo, the residue is stirred with water, and the insoluble precipitate is filtered off with suction and washed to neutrality using highly dilute hydrochloric acid and water. After drying, 7.0 g (0.0226 mol=75% of theory) of 4-amino-2-(4,6-bis-difluoromethoxy)-pyrimidin-2-yl-2,4-dihydro-3H-1,2,4-triazol-3-one of melting point 195° C. remain.

The compounds of the formula (II) which are listed in Table 3 below can be prepared analogously to Examples (II-1) to (II-4) ##STR384##

                                      TABLE 3                                      __________________________________________________________________________     Ex. No.                                                                             R.sup.3                                                                              R.sup.4                                                                             X Y  Z       Melting point (°C.)                        __________________________________________________________________________     II-5 C(CH.sub.3).sub.3                                                                    OCH.sub.3                                                                           N CH COCH.sub.3                                                                             205                                               II-6 CF.sub.3                                                                             OCH.sub.3                                                                           N CH COCH.sub.3                                                                             213                                               II-7 C.sub.2 H.sub.5                                                                      OCH.sub.3                                                                           N CH COCH.sub.3                                                                             167                                               II-8 C.sub.3 H.sub.7                                                                      OCH.sub.3                                                                           N CH COCH.sub.3                                                                             183                                               II-9 CH(CH.sub.3).sub.2                                                                   OCH.sub.3                                                                           N CH COCH.sub.3                                                                             206                                               II-10                                                                               CH.sub.3                                                                             CH.sub.3                                                                            N CH CCH.sub.3                                                                              310                                               II-11                                                                               H     OCH.sub.3                                                                           N CH CNHCH.sub.3                                               II-12                                                                               H     OCH.sub.3                                                                           N N  COCH.sub.3                                                II-13                                                                               CH.sub.3                                                                             OCH.sub.3                                                                           N N  CCH.sub.3                                                 II-14                                                                               CH.sub.3                                                                             Cl   N CH COCH.sub.3                                                II-15                                                                                     OCH.sub.3                                                                           N CH COCH.sub.3                                                II-16                                                                                ##STR385##                                                                          OCH.sub.3                                                                           N CH COCH.sub.3                                                II-17                                                                               CH.sub.3                                                                             OCHF.sub.2                                                                          N CH COCHF.sub.2                                                                            255                                               __________________________________________________________________________

STARTING SUBSTANCES OF THE FORMULA (IV) Example (IV-1) ##STR386##

10.0 g (0.088 mol) of 4-amino-5-methyl-2,4-dihydro-3H-1, 2,4-triazol-3-one are dissolved in 50 ml of dry pyridine, the mixture is cooled to -10° C., and 32.7 g (0.12 mol) of 2-trifluoromethoxy-benzenesulphonyl chloride are added. The reaction mixture is allowed to reach room temperature approximately 20° C.) and stirred for approximately 12 hours. After the mixture has been concentrated, the residue is taken up in methylene chloride and shaken with 1N hydrochloric acid and then with water. The organic phase is dried with sodium sulfate and filtered. The solvent is carefully distilled off from the filtrate under a water pump vacuum. 23.1 g (80% of theory) of 4-(2-trifluoromethoxy-phenylsulphonylamino)-5-methyl-2,4-dihydro-3H-1,2,4-triazol-3-one are obtained as an oily residue.

¹ H-NMR*) (DMSO, δ, ppm): 2.10 (s, CH₃), 7.55, 7.83, 7.93 (m, 4H), approximately 11.5 (m, 2×NH).

The compounds of the formula (Iv), which are listed in Table 4 below, can be prepared analogously.

                                      TABLE 4                                      __________________________________________________________________________     Preparation Examples of the starting substances                                of the formula (IV)                                                             ##STR387##                            (IV)                                    Example No.                                                                           R.sup.1   R.sup.2      R.sup.3                                                                           Physical data                                 __________________________________________________________________________     IV-2                                                                                   ##STR388##                                                                              H            CH.sub.3                                                                          NMR: 2.04.sup.a                               IV-3                                                                                   ##STR389##                                                                              H            CH.sub.3                                                                          NMR: 2.04.sup.a                               IV-4                                                                                   ##STR390##                                                                              H            CH.sub.3                                                                          NMR: 2.11.sup.a                               IV-5                                                                                   ##STR391##                                                                               ##STR392##  CH.sub.3                                                                          M.p.: 180-190° C.                      IV-6                                                                                   ##STR393##                                                                              H            CH.sub.3                                                                          M.p.: 206-207° C.                      __________________________________________________________________________      .sup.a .sup.1 H-NMR (DMSO, δ , ppm) for R.sup.3 = CH.sub.3         

STARTING SUBSTANCES OF THE FORMULA (XI) Example (XI-1) ##STR394##

A mixture of 4.0 g (0.04 mol) of 5-methyl-1,3,4-oxadiazol-2(3H)-one, 8.8 g (0.047 mol) of 4,6-dimethoxy-2-methylsulphonyl-pyrimidine, 16.9 g (0.12 mol) of potassium carbonate and 100 ml of acetonitrile is stirred for 4 hours at 60° C. The cold mixture is concentrated under a waterpump vacuum, the residue is stirred with water, and the crystalline product is isolated by filtering off with suction.

4.8 g (50% of theory) of 3-(4,6-dimethoxypyrimidin-2-yl)-5-methyl-1,3,4-oxadiazol-2(3H)-one of melting point 158° C. are obtained.

USE EXAMPLES

In the following Use Examples, the compound listed below is used as comparison substance: ##STR395## 4-(3-trifluoromethoxy-benzylideneamino)-2,4-dihydro-3H-1,2,4-triazol-3-one (disclosed is U.S. Pat. No. 3,884,910)

Example A Post-Emergence Test

Solvent: 5 parts by weight of acetone

Emulsifier: 1 part by weight of alkylaryl polyglycol ether

To produce a suitable preparation of active compound, 1 part by weight of active compound is mixed with the stated amount of solvent, the stated amount of emulsifier is added and the concentrate is diluted with water to the desired concentration.

Test plants which have a height of 5-15 cm are sprayed with the preparation of the active compound in such a way as to apply the particular amounts of active compound desired per unit area. The concentration of the spray liquor is chosen such that the particular amounts of active compound desired are applied in 2,000 l of water/ha. After three weeks, the degree of damage to the plants is rated in % damage in comparison to the development of the untreated control.

The figures denote:

0%=no action (like untreated control)

100%=total destruction

In this test, for example, the compounds according to Preparation Examples: (1), (2), (3), (4), (92), (208) and (210) show a clearly superior activity compared with the prior art.

Example B Pre-Emergence Test

Solvent: 5 parts by weight of acetone

Emulsifier: 1 part by weight of alkylaryl polyglycol ether

To produce a suitable preparation of active compound, 1 part by weight of active compound is mixed with the stated amount of solvent, the stated amount of emulsifier is added and the concentrate is diluted with water to the desired concentration.

Seeds of the test plants are sown in normal soil and, after 24 hours, watered with the preparation of the active compound. It is expedient to keep constant the amount of water per unit area. The concentration of the active compound in the preparation is of no importance, only the amount of active compound applied per unit area being decisive. After three weeks, the degree of damage to the plants is scored in % damage in comparison to the development of the untreated control. The figures denote:

0%=no action (like untreated control)

100%=total destruction

In this test, for example the compounds of Preparation Examples: (1), (2), (3), (4), (208) and (210) have a clearly superior activity compared with the prior art.

It will be appreciated that the instant specification and claims are set forth by way of illustration and not limitation, and that various modifications and changes may be made without departing from the spirit and scope of the present invention. 

What is claimed is:
 1. A substituted sulphonylaminotriazolinone of the formula ##STR396## in which R¹ represents the radical ##STR397## where R⁷ and R⁸ are identical or different and represent hydrogen, fluorine, chlorine, bromine, iodine, cyano, nitro, C₁ -C₆ -alkyl (which to optionally substituted by fluorine, chlorine, bromine, cyano, carboxyl, C₁ -C₄ -alkoxycarbonyl, C₁ -C₄ -alkylaminocarbonyl di-(C₁ -C₄ -alkyl)aminocarbonyl, hydroxyl, C₁ -C₄ -alkoxy, formyloxy, C₁ -C₄ -alkyl carbonyloxy, C₁ -C₄ -alkoxycarbonyloxy, C₁ -C₄ -alkylamino-carbonyloxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphonyl C₁ -C₄ -alkylsulphonyl, di-(C₁ -C₄ -alkyl)aminosulphonyl C₃ -C₆ -cycloalkyl or phenyl), represent C₂ -C₆ -alkenyl (which is optionally substituted by fluorine, chlorine, bromine, cyano, C₁ -C₄ -alkoxycarbonyl, carboxyl or phenyl), represent C₂ -C₆ -alkinyl (which is optionally substituted by fluorine, chlorine, bromine, cyano, C₁ -C₄ -alkoxy-carbonyl, carboxyl or phenyl), represent C₁ -C₄ -alkoxy (which is optionally substituted by fluorine, chlorine, bromine, cyano, carboxyl, C₁ -C₄ -alkoxy-carbonyl C₁ -C₄ -alkoxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl or C₁ -C₄ -alkylsulphonyl), represent C₁ -C₄ -alkylthio (which is optionally substituted by fluorine, chlorine, bromine, cyano, carboxyl, C₁ -C₄ -alkoxy-carbonyl, C₁ -C₄ -alkylthio C₁ -C₄ -alkylsulphinyl or C₁ -C₄ -alkylsulphonyl), represent C₃ -C₆ -alkenyloxy which is optionally substituted by fluorine, chlorine, bromine, cyano, nitro, C₁ -C₃ -alkylthio or C₁ -C₄ -alkoxycarbonyl), C₃ -C₆ -alkinyloxy, C₃ -C₆ -alkinylthio or represent the radical --S(O)_(p) --R⁹, whereP represents the numbers 1 or 2 and R⁹ represents fluorine, C₁ -C₄ -alkyl (which is optionally substituted by fluorine, chlorine, bromine, cyano or C₁ -C₄ -alkoxy-carbonyl), C₃ -C₆ -alkenyl, C₃ -C₆ -alkinyl, C₁ -C₄ -alkoxy, C₁ -C₄ -alkoxy-C₁ -C₄ -alkylamino, C₁ -C₄ -alkylamino, di(C₁ -C₄ -alkyl)-amino or represents the radical --NHOR¹⁰, whereR¹⁰ represents C₁ -C₆ -alkyl (which is optionally substituted by fluorine, chlorine, cyano, C₁ -C₄ -alkoxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl, C₁ -C₄ -alkylsulphonyl, C₁ -C₄ -alkyl-carbonyl, C₁ -C₄ -alkoxycarbonyl, C₁ -C₄ -alkylaminocarbonyl or di-(C₁ -C₄ -alkyl)-amino-carbonyl), represents C₃ -C₆ -alkenyl (which is optionally substituted by fluorine, chlorine or bromine), C₃ -C₆ -alkinyl, C₃ -C₆ -cycloalkyl, C₃ -C₆ -cycloalkyl-C₁ -C₂ -alkyl, phenyl-C₁ -C₂ -alkyl (which is optionally substituted by fluorine, chlorine, nitro, cyano, C₁ -C₄ -alkyl, C₁ -C₄ -alkoxy or C₁ -C₄ -alkoxy-carbonyl), represents benzhydryl or represents phenyl (which is optionally substituted by fluorine, chlorine, nitro, cyano, C₁ -C₄ -alkyl, trifluoromethyl, C₁ -C₄ -alkoxy, C₁ -C₂ -fluoroalkoxy, C₁ -C₄ -alkylthio, trifluoromethylthio or C₁ -C₄ -alkoxycarbonyl), R⁷ and/or R⁸ furthermore represent phenyl or phenoxy, C₁ -C₄ -alkylcarbonylamino, C₁ -C₄ -alkoxy-carbonylamino, C₁ -C₄ -alkylaminocarbonyl-amino, di-(C₁ -C₄ -alkyl)-aminocarbonylamino, or represent the radical --CO--R¹¹, whereR¹¹ represents C₁ -C₆ -alkyl, C₁ -C₆ -alkoxy, C₃ -C₆ -cycloalkoxy, C₃ -C₆ -alkenyloxy, C₁ -C₄ alkylthio, C₁ -C₄ -alkylamino, C₁ -C₄ -alkoxyamino, C₁ -C₄ -alkoxy-C₁ -C₄ -alkyl-amino or di-(C₁ -C₄ -alkyl)-amino which are optionally substituted by fluorine and/or chlorine), R⁷ and/or R⁸ furthermore represent C₁ -C₄ -alkylsulphonyloxy, di-(C₁ -C₄ -alkyl)-aminosulphonylamino or the radical --CH═N--R¹², whereR¹² represents C₁ -C₆ -alkyl which is optionally substituted by fluorine, chlorine, cyano, carboxyl, C₁ -C₄ -alkoxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl or C₁ -C₄ -alkylsulphonyl, represents benzyl which is optionally substituted by fluorine or chlorine, represents C₃ -C₆ -alkenyl or C₃ -C₆ -alkinyl, each of which is optionally substituted by fluorine or chlorine, represents phenyl which is optionally substituted by fluorine, chlorine, bromine, C₁ -C₄ -alkyl, C₁ -C₄ -alkoxy, trifluoromethyl, trifluoromethoxy or trifluoromethylthio, represents C₁ -C₆ -alkoxy, C₃ -C₆ -alkenoxy, C₃ -C₆ -alkinoxy of benzyloxy, each of which is optionally substituted by fluorine and/or chlorine, represents amino, C₁ -C₄ -alkylamino, di-(C₁ -C₄ -alkyl)-amino, phenylamino, C₁ -C₄ -alkyl-carbonylamino, C₁ -C₄ -alkoxy-carbonylamino, C₁ -C₄ -alkylsulphonylamino or represents phenylsulphonylamino which is optionally substituted by fluorine, chlorine, bromine or methyl,where furthermore R¹ represents the radical ##STR398## where R¹³ represents hydrogen or C₁ -C₄ -alkyl,R¹⁴ and R¹⁵ are identical or different and represent hydrogen, fluorine, chlorine, bromine, nitro, cyano, C₁ -C₄ -alkyl (which is optionally substituted by fluorine and/or chlorine), C₁ -C₄ -alkoxy (which is optionally substituted by fluorine and/or chlorine), carboxyl, C₁ -C₄ -alkoxycarboyl, C₁ -C₄ -alkylsulphonyl or di-(C₁ -C₄ -alkyl)-aminosulphonyl; where furthermore R¹ represents the radical ##STR399## where R¹⁶ and R¹⁷ are identical or different and represent hydrogen, fluorine, chlorine, bromine, nitro, cyano, C₁ -C₄ -alkykl (which is optionally substituted by fluorine and/or chlorine) or C₁ -C₄ -alkoxy (which is optionally substituted by fluorine and/or chlorine); where furthermore R¹ represents the radical ##STR400## where R¹⁸ and R¹⁹ are identical or different and represent hydrogen, fluorine, chlorine, bromine, nitro, cyano, C₁ -C₄ -alkyl (which is optionally substituted by fluorine and/or chlorine), C₂ -C₄ -alkenyl (which is optionally substituted by fluorine and/or chlorine), C₁ -C₄ -alkoxy (which is optionally substituted by fluorine and/or chlorine), represents C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl or C₁ -C₄ -alkylsulphonyl (which are optionally substituted by fluorine and/or chlorine), and represents di-(C₁ -C₄ -alkyl)-aminosulphonyl, C₁ -C₄ -alkoxy-carbonyl, dimethylaminocarbonyl or dioxolanyl; where furthermore R¹ represents the radical ##STR401## where R²⁰ and R²¹ are identical or different and represent hydrogen, fluorine, chlorine, bromine, C₁ -C₄ -alkyl (which is optionally substituted by fluorine and/or bromine), C₁ -C₄ -alkoxy (which is optionally substituted by fluorine and/or chlorine), represent C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl or C₁ -C₄ -alkylsulphonyl (which are optionally substituted by fluorine and/or chlorine), or represent di-(C₁ -C₄ -alkyl)-aminosulphonyl; where furthermore R¹ represents the radical ##STR402## where R²² and R²³ are identical or different and represent hydrogen, fluorine, chlorine, bromine, cyano, nitro, C₁ -C₄ -alkyl (which is optionally substituted by fluorine, chlorine, C₁ -C₄ -alkoxy and/or C₁ -C₄ -halogenoalkoxy), C₁ -C₄ -alkoxy (which is optionally substituted by fluorine and/or chlorine), C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl or C₁ -C₄ -alkylsulphonyl (which is optionally substituted by fluorine and/or chlorine), di-(C₁ -C₄ -alkyl)-aminosulphonyl or C₁ -C₄ -alkoxycarbonyl, andA represents oxygen, sulphur or the group N--Z¹, whereZ¹ represents hydrogen, C₁ -C₄ -alkyl (which is optionally substituted by fluorine, chlorine, bromine or cyano), C₃ -C₆ -cycloalkyl, benzyl, phenyl (which is optionally substituted by fluorine, chlorine, bromine or nitro), C₁ -C₄ -alkylcarbonyl, C₁ -C₄ -alkoxy-carbonyl or di-(C₁ -C₄ -alkyl)-aminocarbonyl; where furthermore R¹ represents the radical ##STR403## where R²⁴ and R²⁵ are identical or different and represent hydrogen, C₁ -C₄ -alkyl, halogen, C₁ -C₄ -alkoxycarbonyl, C₁ -C₄ -alkoxy or C₁ -C₄ -halogenoalkoxy,Y¹ represents sulphur or the group N--R²⁶, whereR²⁶ represents hydrogen or C₁ -C₄ -alkyl; where furthermore R¹ represents the radical ##STR404## where R²⁷ represents hydrogen, C₁ -C₄ -alkyl, benzyl, (iso)quinolinyl or phenyl,R²⁸ represents hydrogen, halogen, cyano, nitro, C₁ -C₄ -alkyl (which is optionally substituted by fluorine and/or chlorine), C₁ -C₄ -alkoxy (which is optionally substituted by fluorine and/or chlorine), dioxolanyl or C₁ -C₄ -alkoxy-carbonyl and R²⁹ represents hydrogen, halogen or C₁ -C₄ -alkyl; where furthermore R¹ represents the radical ##STR405## where R³⁰ represents hydrogen, halogen, C₁ -C₄ -alkyl, C₁ -C₄ -halogenoalkyl, C₁ -C₄ -alkoxy, C₁ -C₄ -halogenoalkoxy or C₁ -C₄ -alkoxy-carbonyl; where furthermore R¹ represents the radical ##STR406## where R³¹ represents C₁ -C₄ -alkyl andR³² represents C₁ -C₄ -alkyl; where furthermore R¹ represents the radical ##STR407## where R³³ represents hydrogen or methylin which furthermore R² represents hydrogen or the group --SO₂ --R¹,in which furthermore R³ represents hydrogen, fluorine, chlorine, bromine, iodine, hydroxyl, mercapto, amino or an optionally fluorine- and/or chlorine-substituted radical from the series comprising C₁ -C₄ -alkyl, C₃ -C₆ -cycloalkyl, benzyl, phenyl, C₁ -C₄ -alkoxy, C₃ -C₄ -alkenyloxy, C₃ -C₄ -alkinyloxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl, C₁ -C₄ -alkylsulphonyl, C₃ -C₄ -alkenylthio, C₃ -C₄ -alkinylthio, benzyloxy, benzylthio, C₁ -C₄ -alkylamino and di-(C₁ -C₄ -alkyl)-amino, R⁴ represents hydrogen, fluorine, chlorine, bromine, hydroxyl, amino, C₁ -C₄ -alkyl, C₁ -C₄ -halogenoalkyl, C₁ -C₂ -alkoxy-C₁ -C₂ -alkyl, C₁ -C₄ -alkoxy, C₁ -C₄ -halogenoalkoxy, C₁ -C₂ -alkoxy-C₁ -C₂ -alkoxy, C₁ -C₄ -alkylthio, C₁ -C₄ -halogenoalkylthio, C₁ -C₄ -alkylsulphinyl, C₁ -C₄ -alkylsulphonyl, C₁ -C₄ -alkylamino or di-(C₁ -C₄ -alkyl)-amino, R⁵ represents hydrogen, fluorine, chlorine, bromine, cyano, methyl, formyl, acetyl, methoxycarbonyl or ethoxycarbonyl and R⁶ represents hydrogen, fluorine, chlorine, bromine, C₁ -C₄ -alkyl, C₁ -C₄ -alkoxy, C₁ -C₄ -halogenoalkoxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl, C₁ -C₄ -alkylsulphonyl, C₁ -C₄ -alkylamino, dimethylamino or diethylamino,or a salt thereof.
 2. A compound or salt thereof according to claim 1, in whichR¹ represents the radical ##STR408## where R⁷ represents fluorine, chlorine, bromine, methyl, trifluoromethyl, methoxy, difluoromethoxy, trifluoromethoxy, C₁ -C₃ -alkylthio, C₁ -C₃ -alkylsulphinyl, C₁ -C₃ -alkylsulphonyl, dimethylaminosulphonyl, N-methoxy-N-methylaminosulphonyl, phenyl, phenoxy or C₁ -C₃ -alkoxycarbonyl andR⁸ represents hydrogen, fluorine or chlorine; where furthermore R¹ represents the radical ##STR409## where R¹³ represents hydrogen,R¹⁴ represents fluorine, chlorine, bromine, methyl, methoxy, difluoromethoxy, trifluoromethoxy, ethoxy, methoxycarbonyl, ethoxycarbonyl, methylsulphonyl or dimethylaminosulphonyl and R¹⁵ represents hydrogen; where furthermore R¹ represents the radical ##STR410## where R represents C₁ -C₄ -alkyl, or R¹ represents the radical ##STR411## where R represents C₁ -C₄ -alkyl, or R¹ represents the radical ##STR412## where R³⁰ represents hydrogen, chlorine, methyl, ethyl, methoxycarbonyl or ethoxycarbonyl;in which furthermore R² represents hydrogen or for the group --SO₂ --R¹, R³ represents hydrogen, methyl, ethyl, propyl, isopropyl, trifluoromethyl, cyclopropyl, benzyl, phenyl, t-butyl, s-butyl, i-butyl, n-butyl, methoxy or methylthio, R⁴ represents hydrogen, fluorine, chlorine, bromine, methyl, trifluoromethyl, methoxy, ethoxy, difluoromethoxy, methylthio, ethylthio, amino, methylamino, ethylamino, dimethylamino or diethylamino,R⁵ represents hydrogen, fluorine, chlorine or methyl, and R⁶ represents hydrogen, fluorine, chlorine, bromine, methyl, ethyl, methoxy, ethoxy, propoxy, isopropoxy, difluoromethoxy, methylthio, ethylthio, methylamino, ethylamino, dimethylamino or diethylamino.
 3. A compound according to claim 1, wherein such compound is 4-[bis-(2-methoxycarbonyl-phenylsulphonyl)-amino]-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one of the formula ##STR413## or a salt thereof.
 4. A compound according to claim 1, wherein such compound is 4-(2-methoxycarbonyl-phenyl-sulphonylamino)-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one of the formula ##STR414## or a salt thereof.
 5. A compound according to claim 1, wherein such compound is 4-(2-methoxycarbonyl-phenyl-sulphonylamino)-5-methyl-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one of the formula ##STR415## or a salt thereof.
 6. A compound according to claim 1, wherein such compound is 4-(2-methoxycarbonyl-phenyl-sulphonylamino)-b 5-methylthio-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one of the formula ##STR416## or a salt thereof.
 7. A compound according to claim 1, wherein such compound is 4-(2-methoxycarbonyl-phenyl-sulphonylamino)-2-[4,6-bis-(difluoromethoxy)-pyrimidin-2-yl]-2,4-dihydro-3H-1,2,4-triazol-3-one of the formula ##STR417## or a salt thereof.
 8. A compound according to claim 1, wherein such compound is 4-(2-methoxycarbonyl-phenyl-sulphonylamino)-5-ethyl-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one of the formula ##STR418## or a salt thereof.
 9. A compound according to claim 1, wherein such compound is 4-(2-methoxycarbonyl-phenyl-sulphonylamino)-5-propyl-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one of the formula ##STR419## or a salt thereof.
 10. A herbicidal composition comprising a herbicidally effective amount of a compound or salt thereof according to claim 1 and a diluent.
 11. A method of combating unwanted vegetation which comprises applying to such vegetation or to a locus from which it is desired to exclude such vegetation a herbicidally effective amount of a compound or salt thereof according to claim
 1. 12. The method according to claim 11, wherein such compound is4-(bis-(2-methoxycarbonyl-phenylsulphonyl)-amino]-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one, 4-(2-methoxycarbonyl-phenyl-sulphonylamino)-2-(2,4-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one, 4-(2-methoxycarbonyl-phenyl-sulphonylamino)-5-methyl-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one, 4-(2-methoxycarbonyl-phenyl-sulphonylamino)-5-methylthio-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one, 4-(2-methoxycarbonyl-phenyl-sulphonylamino)-2-[4,6-bis-(difluoromethoxy)-pyrimidin-2-yl]-2,4-dihydro-3H-1,2,4-triazol-3-one, 4-(2-methoxycarbonyl-phenyl-sulphonylamino)-5-ethyl-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one or 4-(2-methoxycarbonyl-phenyl-sulphonylamino)-5-propyl-2-(4,6-dimethoxy-pyrimidin-2-yl)-2,4-dihydro-3H-1,2,4-triazol-3-one,or a salt thereof.
 13. A compound of the formula ##STR420## in which R³ represents hydrogen, fluorine, chlorine, bromine, iodine, hydroxyl, mercapto, amino or an optionally fluorine- and/or chlorine-substituted radical selected from the group consisting of C₁ -C₄ -alkyl, C₃ -C₆ -cycloalkyl, benzyl, phenyl, C₁ -C₄ -alkoxy, C₃ -C₄ -alkenyloxy, C₃ -C₄ -alkinyloxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl, C₁ -C₄ -alkylsulphonyl, C₃ -C₄ -alkenylthio, C₃ -C₄ -alkinylthio, benzyloxy, benzylthio, C₁ -C₄ -alkylamino and di-(C₁ -C₄ -alkyl)-amino,R⁴ represents hydrogen, fluorine, chlorine, bromine, hydroxyl, amino, C₁ -C₄ -alkyl, C₁ -C₄ -halogenoalkyl, C₁ -C₂ -alkoxy-C₁ -C₂ alkyl, C₁ -C₄ -alkoxy, C₁ -C₄ -halogenoalkoxy, C₁ -C₂ -alkoxy-C₁ -C₂ -alkoxy, C₁ -C₄ -alkylthio, C₁ -C₄ -halogenoalkylthio, C₁ -C₄ -alkylsulphinyl, C₁ -C₄ -alkylsulphonyl, C₁ -C₄ -alkylamino or di-(C₁ -C₂ -alkyl)-amino, R⁵ represents, fluorine, chlorine, bromine, cyano, methyl, formyl, acetyl, methoxycarbonyl or ethoxycarbonyl and R⁶ represents hydrogen, fluorine, chlorine, bromine, C₁ -C₄ -alkyl, C₁ -C₄ -alkoxy, C₁ -C₄ -halogenoalkoxy, C₁ -C₄ -alkylthio, C₁ -C₄ -alkylsulphinyl, C₁ -C₄ -alkylsulphonyl, C₁ -C₄ -alkylamino, dimethylamino or diethylamino,or a salt thereof. 